The Short Answer: It Depends on What You Have
Selling LEGO isn’t a one-platform game. A sealed retired Millennium Falcon belongs on a completely different marketplace than a 90%-complete City set missing two minifigures. The platform you choose can mean the difference between getting 40% of market value and getting 120%.
Here’s the framework: BrickLink is the gold standard for serious LEGO sellers — higher prices, knowledgeable buyers, and purpose-built tools. eBay gives you the widest audience and auction fever for rare sets. Facebook Marketplace moves bulk and common sets fast with zero fees. Everything else fills specific niches.
Before you list anything, run your set through the Flip Profit Calculator to understand your true margins after fees and shipping. That single step will tell you whether a set is worth listing individually or better off in a bulk lot.
Quick Platform Comparison
| Platform | Best For | Seller Fees | Avg. Sale Speed | Audience |
|---|---|---|---|---|
| BrickLink | Rare/retired sets, parts, minifigs | ~3-5% + payment processing | 1-4 weeks | Hardcore LEGO collectors |
| eBay | Sealed retired sets, auctions, wide reach | ~13.25% total | 1-2 weeks | General collectors + impulse buyers |
| Facebook Marketplace | Bulk lots, common sets, local pickup | 0% (local) / ~8% (shipped) | 1-7 days | Local families, casual buyers |
| Mercari | Mid-range used sets, easy listing | 10% | 1-3 weeks | Casual resellers + buyers |
| Amazon | New/sealed current sets (if authorized) | 15% referral + FBA fees | Fast | Mass-market shoppers |
| Local Toy/Comic Stores | Instant cash, bulk offloading | 50-60% of value (buyout) | Immediate | N/A |
Use the eBay & Mercari Fee Calculator to compare your net payout across platforms before deciding where to list.
Platform Deep-Dives
BrickLink — The LEGO Collector’s Marketplace
BrickLink is the world’s largest online LEGO marketplace, now owned by the LEGO Group itself. If you’re selling anything beyond common retail sets, this is where the money is.
Why BrickLink pays the most:
- Buyers are knowledgeable and willing to pay fair market value (they aren’t lowballing like Facebook buyers).
- The platform’s price guide shows exactly what every set, minifigure, and individual part has sold for — no guessing.
- Retired and rare sets regularly sell for 2-5x their original retail price.
- Parts-only and minifigure-only sales are not just accepted — they’re the norm.
BrickLink store setup tips:
- Start with a free store. BrickLink charges no monthly fee for basic stores. You pay a small commission (roughly 3%) plus payment processing fees.
- Use the catalog system. Every LEGO set, part, and minifigure has a unique catalog number. Listing is fast once you learn the system — you select the item from the catalog, set condition and price, and you’re live.
- Price using the Price Guide. Click any item’s price guide to see the last 6 months of sales. Price at or slightly below the current average for fast sales, or at the high end if you can wait.
- Offer combined shipping. BrickLink buyers often purchase from multiple sellers. Offering reasonable combined shipping rates increases your order count.
- Maintain high feedback. BrickLink’s community is tight-knit. Fast shipping and accurate descriptions build your reputation quickly.
What sells best on BrickLink:
- Sealed retired sets (especially Star Wars, Modular Buildings, Creator Expert)
- Individual rare minifigures (some sell for $50-$500+)
- Specific parts in bulk (technic pins, rare colors, printed pieces)
- Complete used sets with all parts verified via BrickLink inventory lists
- Instructions and original boxes (yes, empty boxes sell)
BrickLink pricing tools you should know:
- Price Guide: Historical sale data for every item
- Wanted Lists: See what buyers are actively looking for — list those items first
- Inventory Upload via XML: If you have a large collection, you can upload inventory in bulk using XML files
- Part-Out Value Calculator: Shows you the combined value of every part in a set if sold individually — this is how you decide whether to part out or sell complete
eBay — Widest Audience, Auction Upside
eBay remains the dominant general marketplace for LEGO, especially for sealed retired sets where auction competition drives prices above BrickLink averages.
When eBay beats BrickLink:
- Sealed, retired, highly sought-after sets (think UCS Star Wars, discontinued Harry Potter) — auction format can push prices 10-20% above BrickLink due to bidding wars.
- Sets with broad mainstream appeal (Disney, Marvel, Harry Potter) where casual collectors shop on eBay but never visit BrickLink.
- Large collections or bulk lots — eBay’s audience is massive, so even oddball lots find buyers.
eBay selling strategy for LEGO:
- Use auction format for rare sealed sets. Start at $0.99 with no reserve for maximum bidding activity. Sounds scary, but high-demand retired sets almost always exceed market value with enough watchers.
- Use Buy It Now for everything else. Used sets, parts lots, and common retired sets sell better at fixed price.
- List during peak times. Sunday evenings (7-9 PM EST) remain eBay’s highest-traffic window. Set your auctions to end then.
- Leverage the eBay Sold Link Generator. Use our eBay Sold Link Generator to research completed sales instantly. Just enter the set number and see exactly what your set has been selling for.
- Photograph the set number prominently. LEGO buyers search by set number. Make it visible in your first photo and include it in the title.
eBay fee structure for LEGO:
eBay charges approximately 13.25% in combined final value and payment processing fees. On a $100 LEGO set, you net roughly $86.75 before shipping costs. Compare this to BrickLink’s roughly $95-96 net on the same sale.
For high-value sets ($200+), that fee difference adds up. But if eBay’s auction format gets you $120 for a set that would sell for $100 on BrickLink, the higher fees are irrelevant. Always run the numbers through the Flip Profit Calculator.
Facebook Marketplace — Fast Cash, Zero Fees
Facebook Marketplace is your best option when speed and simplicity matter more than maximizing price.
When to use Facebook Marketplace:
- Bulk LEGO lots. Parents buy LEGO by the pound for their kids. A 20-lb bin of mixed LEGO that would be tedious to sort and list on BrickLink can sell for $8-12/lb on Facebook within days.
- Common current or recently retired sets. Sets still available at retail or recently discontinued don’t command premiums on BrickLink. Sell them locally and skip the shipping hassle.
- Sets missing pieces or minifigures. BrickLink and eBay buyers expect completeness. Facebook buyers are more forgiving — they just want LEGO for their kids to play with.
- Large sets that are expensive to ship. The Hogwarts Castle or Ninjago City costs $25+ to ship. Selling locally eliminates that entirely.
Facebook Marketplace tips:
- Price 10-15% below eBay sold comps. You’re offering the convenience of local pickup. Buyers expect a slight discount for that, but you keep more because there are zero fees.
- Post in local LEGO buy/sell groups. Many cities have dedicated LEGO trading groups with active, motivated buyers who pay better than general Marketplace browsers.
- Bundle aggressively. “3 City sets for $60” moves faster than three individual $25 listings.
- Meet at a police station or fire station. Standard safety practice for local sales, especially when selling $200+ sets.
Mercari — The Easy Middle Ground
Mercari sits between eBay and Facebook: simpler than eBay’s interface, with built-in shipping but lower fees than eBay for some categories.
When Mercari works for LEGO:
- Used complete sets in the $20-$100 range
- Small lots of minifigures
- Sellers who want a simple listing process without eBay’s complexity
Mercari’s drawbacks:
- 10% seller fee
- Smaller LEGO-specific audience than BrickLink or eBay
- Buyers tend to send lowball offers — expect to negotiate
- No auction format, so you can’t benefit from bidding wars on rare sets
Mercari is a solid secondary platform. List your most valuable items on BrickLink/eBay and use Mercari for mid-tier items you want to move without much effort.
Amazon — High Volume, High Barrier
Selling LEGO on Amazon is viable but comes with significant caveats.
Requirements:
- Professional seller account ($39.99/month)
- LEGO is a gated brand — you need approval to sell, which requires invoices from authorized distributors
- Sets must be new and sealed
- FBA (Fulfillment by Amazon) is practically required to compete
When Amazon works:
- You source sealed sets at deep discount (clearance, liquidation) and sell at or near retail
- You have the volume to justify the monthly fee and FBA logistics
- Current retail sets with high demand and thin margins — Amazon’s traffic compensates
When Amazon doesn’t work:
- Retired/used sets (not allowed under most LEGO brand gating)
- Individual sellers with a handful of sets
- Anyone not already set up as an Amazon seller
For most people reading this article, Amazon is not the right platform. Stick with BrickLink and eBay.
Local Toy and Comic Stores — Instant Cash, Lower Returns
Some local toy stores, comic shops, and dedicated LEGO resellers will buy collections outright. This is the fastest possible exit but the lowest return.
What to expect:
- Stores typically offer 40-60% of market value for desirable sets
- Bulk collections of mixed/common sets may get $4-6 per pound
- Rare sealed sets get better offers, but still below what you’d get selling direct
- Payment is usually immediate (cash or store credit)
When this makes sense:
- You inherited a collection and want to convert it to cash in one trip
- The collection is mostly common sets that would take months to sell individually
- You value your time more than the price premium of online selling
Call ahead. Not every store buys used LEGO, and those that do often have specific criteria.
Sealed vs. Used vs. Parts-Only: The Routing Decision
This is the most important strategic decision in LEGO selling. The condition of your set determines which platform and format will maximize your return.
Sealed Sets
Sealed LEGO sets — especially retired ones — are the blue chips of LEGO investing. They appreciate predictably and sell quickly on any platform.
Routing for sealed sets:
- Retired 2+ years, high demand (Star Wars UCS, Modular Buildings, Icons): BrickLink or eBay auction. These are your highest-margin items. Don’t leave money on the table by selling locally.
- Retired 2+ years, moderate demand: BrickLink Buy It Now. The collector audience is there, but not enough demand to drive auction fever.
- Recently retired (< 2 years): Hold if possible. LEGO sets typically see their sharpest price appreciation 1-3 years after retirement.
- Currently in production: Only sell if you got them below retail (clearance, employee discount, etc.). Amazon or eBay are best for current-production sealed sets.
Used Complete Sets
A used set with all pieces and minifigures, ideally with instructions and box.
Routing for used complete sets:
- Verify completeness first. Use BrickLink’s inventory checker — enter the set number and check off every part. Missing a few common pieces? Order them on BrickLink for pennies and sell the set as complete.
- High-value sets (original retail $100+): BrickLink or eBay. The effort of listing is worth it for the premium.
- Mid-value sets ($30-$100 retail): Mercari or eBay. Quick listing, decent return.
- Low-value sets (< $30 retail): Facebook Marketplace in bundles. Not worth the individual listing effort on other platforms.
Parts-Only / Incomplete Sets
This is where most people leave money on the table. A set missing key parts or minifigures seems worthless, but it often isn’t.
The part-out strategy:
BrickLink’s Part-Out Value calculator will show you the combined value of every part in a set if sold individually. For many sets, the part-out value exceeds the value of the complete set. This is especially true for:
- Technic sets (gears, axles, and connectors are always in demand)
- Sets with rare colors (dark red, sand green, dark tan pieces)
- Sets with printed pieces (printed tiles and slopes can’t be replicated by BrickLink buyers)
- Sets with lots of small utility parts (plates, clips, hinges)
If the part-out value is significantly higher than the used-complete value, part it out. Yes, it’s more work — but it can double or triple your return.
Bulk unsorted LEGO:
If you have pounds of mixed LEGO that you don’t want to sort:
- Facebook Marketplace: $8-12/lb for clean, genuine LEGO
- eBay: $10-15/lb in sorted-by-color lots (worth the extra effort)
- Local stores: $4-8/lb
The Minifigure Extraction Strategy
LEGO minifigures are frequently the most valuable component of a set. A single rare minifigure can be worth more than the rest of the set combined.
When to pull minifigures:
- Check BrickLink values. Look up every minifigure in your set on BrickLink. If any individual figure is worth $15+, it’s almost certainly worth selling separately.
- Compare: set value with figures vs. set value without + individual figure values. If pulling the figures nets you more, pull them.
- Example: A used LEGO Star Wars set might sell for $45 complete. But the exclusive Boba Fett minifigure from that set sells for $35 alone, and the rest of the set (without the figure) still sells for $25. That’s $60 vs. $45 — a 33% increase for five minutes of work.
High-value minifigure categories:
- Star Wars exclusive characters (especially from UCS and expensive sets)
- Comic-Con/event exclusives (can reach $100-$500+)
- Retired Harry Potter, Lord of the Rings, and Marvel figures
- Printed or unique head/torso combinations not available in other sets
- Collectible Minifigure Series (CMF) — complete sets or rare individuals
Where to sell minifigures:
- BrickLink: Best prices, highest volume of minifigure buyers
- eBay: Good for lots (e.g., “10 Star Wars minifigures”) or high-value individuals
- Facebook LEGO groups: Fast sales for moderately priced figures
- r/Legomarket on Reddit: Active community, good for mid-range figures
Retirement Dates and Investment Timing
LEGO set retirement is the single most important factor in LEGO investing. When a set retires (stops being produced), supply freezes while demand continues — and prices climb.
How to track retirement dates:
- BrickSet.com maintains a retirement database with known and rumored dates
- LEGO.com marks sets as “Retiring Soon” a few months before discontinuation
- BrickLink price charts show the retirement bump in real-time
The retirement price curve:
- Pre-retirement (available at retail): Sets sell at or below retail. Not typically profitable to resell unless bought on clearance.
- Just retired (0-6 months): Prices jump 20-40% as retail stock dries up. This is when panic buying starts.
- Short-term retired (6-24 months): Steady appreciation, typically 10-25% per year above retail. This is the sweet spot for selling — demand is high and supply is shrinking.
- Long-term retired (2-5 years): Premium sets can double or triple in value. But storage costs and tied-up capital matter — not everything appreciates equally.
- Vintage (5+ years): Highly set-dependent. Iconic sets (Café Corner, Green Grocer, original Death Star) become genuinely rare and can command 5-10x retail.
What to buy for investment:
- Modular Buildings: Almost every modular has appreciated after retirement. They’re large, displayable, and part of a collectible series.
- UCS Star Wars: The holy grail of LEGO investing. High retail prices, massive demand, and they always retire.
- Licensed theme exclusives: Sets tied to movie releases (especially Star Wars, Harry Potter) with exclusive minifigures.
- Icons / Creator Expert: Architecture, vehicles, and display sets with adult appeal.
What NOT to buy for investment:
- City, Friends, Ninjago (most sets) — too many produced, limited collector appeal
- Seasonal sets — low demand after the season passes
- Anything you can’t store properly — humidity and sunlight destroy LEGO box value
Photography Tips for LEGO Listings
Good photos are non-negotiable. LEGO buyers are visual and detail-oriented. Here’s how to photograph your sets for maximum appeal.
For sealed sets:
- Show all six sides of the box. Collectors care about box condition as much as the set itself.
- Photograph any shelf wear, dents, or creases. Disclosing flaws builds trust and prevents returns.
- Include a close-up of the box seals. Buyers want to verify the set hasn’t been opened and resealed.
- Show the set number clearly. Photograph the corner of the box where the set number is printed.
For used/built sets:
- Build the set before photographing. A built set looks dramatically better than a pile of bricks in a bag.
- Use natural light or a lightbox. Harsh overhead lighting creates shadows that hide detail. A $20 Amazon lightbox transforms your photos.
- White or neutral background. Busy backgrounds distract from the set. A white poster board works fine.
- Show minifigures separately. Line them up in front of the set. Collectors want to verify every figure is included.
- Photograph any damage or missing pieces. Yellow discoloration, bite marks, cracks — show them. Surprises lead to returns and negative feedback.
For parts lots:
- Sort by color or type before photographing. An organized lot looks more valuable than a random pile.
- Include a scale reference. A coin or ruler helps buyers gauge piece size in photos.
- Show the total volume. A photo next to a gallon zip bag or storage bin communicates quantity instantly.
Shipping LEGO: Costs and Best Practices
Shipping is often the make-or-break factor in LEGO profitability. Heavy sets eat into margins quickly.
Shipping sealed sets:
- Double-box if the set is valuable. Place the LEGO box inside a slightly larger shipping box with padding. Collectors expect pristine box condition.
- Use USPS Priority Mail for sets under 5 lbs. Flat-rate medium boxes ($16.10) work for many mid-size sets.
- Use UPS/FedEx Ground for heavy sets. Sets over 5 lbs are cheaper via ground shipping, especially with eBay’s discounted rates.
- Never ship in the original LEGO box without an outer box. This is the fastest way to earn negative feedback.
Shipping used sets:
- Bag the pieces. Sort into zip bags (by numbered bag if possible) and cushion inside the box.
- Poly mailers work for small sets. A single polybag set or minifigure lot can ship in a padded mailer for $4-5.
- Include instructions if you have them. Fold-protect them in a separate bag.
Shipping parts on BrickLink:
- Small orders go First Class. USPS First Class Package (under 16 oz) costs $3.50-$5.
- Use appropriate packaging. Small parts in a sandwich bag inside a padded mailer. Larger orders in small boxes.
- BrickLink’s shipping calculator helps you estimate costs before a buyer purchases.
Step-by-Step: Your LEGO Selling Workflow
- Inventory your collection. Separate sealed from used from incomplete. Sort used sets by theme and set number.
- Research values. Use BrickLink’s price guide for every set and the Flip Profit Calculator to estimate net profit after fees.
- Make the routing decision. For each item: which platform, complete or part-out, individual or bundle?
- Verify completeness of used sets. Use BrickLink inventory lists to check every piece. Order missing common parts if cost-effective.
- Pull high-value minifigures. If the math supports it, sell figures separately.
- Photograph everything. Follow the tips above. Good photos = faster sales at higher prices.
- List strategically. Start with your highest-value items on BrickLink/eBay, mid-tier on Mercari, and bulk/common on Facebook.
- Price competitively. Use BrickLink’s price guide and the eBay Sold Link Generator to set data-driven prices.
- Ship promptly and carefully. Fast shipping and good packaging build your reputation and reduce return rates.
Common Mistakes to Avoid
Selling everything as one giant lot. This is the single most expensive mistake. A $2,000 collection sold as a single bulk lot on Facebook might fetch $400-$600. Sorted and listed individually across the right platforms, the same collection could net $1,500-$1,800.
Ignoring minifigure value. We covered this above, but it bears repeating: always check individual minifigure values before selling a set complete.
Not verifying completeness. Selling a set as “complete” when it’s missing pieces leads to returns, negative feedback, and suspended accounts. Always verify.
Underestimating shipping costs. LEGO is heavy. A large set that sells for $80 might cost $18-25 to ship. If you didn’t factor that into your price, your profit evaporates. Run the numbers through the eBay & Mercari Fee Calculator first.
Throwing away boxes and instructions. LEGO boxes and instructions have resale value on BrickLink. An original box for a retired set can sell for $10-$50+. Instructions sell for $5-$20+. Keep everything.
Frequently Asked Questions
How do I find out what my LEGO set is worth?
The most reliable method is checking BrickLink’s Price Guide. Search for your set number (found on the box or instructions) and look at the “Last 6 Months” sales data for your condition (new/sealed or used). For a quick cross-reference, use the eBay Sold Link Generator to see recent eBay completed sales for the same set. The two sources together give you a solid market value range.
Is it better to sell LEGO sets complete or part them out?
It depends on the set. Check BrickLink’s Part-Out Value for your set — this shows the combined value of every individual piece sold separately. If the part-out value is more than 30-40% higher than the complete set value, parting out is usually worth the extra effort. Sets with rare colors, printed pieces, or exclusive parts tend to have the highest part-out premiums. Common sets with no rare elements are almost always better sold complete.
How much are LEGO minifigures worth?
Values range wildly. Common City or Friends figures might be worth $1-3 each. Exclusive Star Wars characters from retired sets regularly sell for $15-$75. Comic-Con exclusives and prototype figures can reach $200-$500 or more. The only way to know is checking BrickLink or eBay sold listings for the specific figure. As a rule, licensed theme minifigures (Star Wars, Marvel, Harry Potter, Lord of the Rings) hold value far better than generic theme figures.
Should I clean LEGO before selling?
Yes, especially for used sets and parts. A warm water bath with mild dish soap, followed by air drying on a towel, removes dust, grime, and sticky residue. Never use bleach, alcohol, or hot water — these can damage or discolor pieces. Clean LEGO photographs better, feels better to the buyer, and justifies higher prices. For yellowed white or light gray pieces, some sellers use hydrogen peroxide and UV light (the “retrobright” method), though this is optional and more advanced.
What’s the best time of year to sell LEGO?
October through early December is peak demand — parents and gift-givers are shopping. Prices typically run 10-20% above average during the holiday season. January sees a brief spike from people spending gift cards. Summer is generally the slowest period. For retired sets specifically, the price bump at retirement is often the best selling window regardless of season.
How do I sell LEGO on BrickLink for the first time?
Create a free account at BrickLink.com, then open a store (also free for basic accounts). Upload your inventory by searching the catalog for your sets or parts and entering quantities, conditions, and prices. Set your shipping methods and costs. BrickLink provides a comprehensive seller guide, and the community forums are helpful for new sellers. Start with a few items to learn the system before listing your entire collection.
Are LEGO sets a good investment?
Historically, sealed LEGO sets have appreciated at an average of 10-15% per year after retirement, outperforming many traditional investments. However, not all sets appreciate equally. Large, licensed, display-oriented sets aimed at adults (Modular Buildings, UCS Star Wars, Icons) have the strongest track record. Mass-produced children’s play sets rarely appreciate meaningfully. Storage costs, capital tie-up, and the risk of market shifts should factor into any investment decision. For more on the broader flipping landscape, see our guide on the best things to flip for profit in 2026.
Can I sell LEGO that’s mixed together in a big bin?
Absolutely. Mixed LEGO lots sell regularly on Facebook Marketplace ($8-12/lb), eBay ($10-15/lb for sorted-by-color lots), and even BrickLink (if sorted by part type). The less sorted your LEGO is, the lower the per-pound price. Sorting by color doubles the per-pound value. Sorting by part type and listing individually on BrickLink can increase the per-pound value by 5-10x, but requires significant time investment. Choose based on how much time you’re willing to spend.
Underpriced provides informational content to help resellers make data-driven decisions. Marketplace fees, policies, and features change frequently — always verify current terms on each platform’s official website before listing. Past investment returns on LEGO sets do not guarantee future appreciation. Underpriced is not a financial advisor and this content does not constitute investment advice.