Item Identifiers for Resellers
Identify vintage items, decode tags, and assess value. Compare options, open the live tools, and use Underpriced to make faster sourcing and pricing decisions.
Tools in this category
Nike Style Code Decoder 2026
Instantly identify Nike shoe model, colorway, and authenticity using the 6-digit style code (SKU). Use the free tool today.
Vintage Levi's Date Decoder 2026
Authenticate and date vintage Levi's jeans 1960s-1990s by red tab (Big E vs small e), care label, Made in USA tag, and button stamps.
GPU Mining Risk Checker 2026
Check if a GPU model was used for cryptocurrency mining (2020-2022 boom). Use the free tool today.
Pyrex Pattern Value Tier List 2026
Instant vintage Pyrex pattern identification and values. S Tier ($100-1500+): Lucky in Love, Pink Gooseberry. Use the free tool today.
Funko Pop Sticker Value Guide 2026
CHASE vs Convention vs Store Exclusives: same figure, 2-10x value difference based on sticker. Detect fake stickers with box number verification.
Lululemon Size Dot Decoder 2026
Decode any Lululemon size dot code to identify style (Align, Scuba, Define, Wunder Under), manufacture date, era, resale value tier,
Vintage T-Shirt Tag Database 2026
Searchable database of vintage t-shirt tags (Screen Stars 1970s, Giant 1990s, Hanes Beefy-T, Brockum, Winterland) with production years, single
Pokemon Card Shadowless Detector 2026
1st Edition Shadowless Pokemon cards worth 10-50x Unlimited. Use the free tool today.
Item Identifiers guides
Vintage T-Shirts Flipping Guide: Make Money Reselling Vintage T-Shirts 2026
Band tees and vintage t-shirts flip for $20-500 per shirt. Master tag dating (single stitch, screen stars), identify tour shirts vs reprints, assess graphics and fading, and source at thrifts.
Is Ray-Ban Worth Reselling? Complete Flipping Guide 2026
Discover if Ray-Ban sunglasses are profitable to resell. Learn to authenticate vintage Bausch & Lomb vs Luxottica models, identify valuable Wayfarers and Aviators, and maximize your profit margins.
How to Authenticate Designer Items: The Complete Reseller's Guide to Spotting Fakes
Learn how to spot fake designer handbags, sneakers, watches, and clothing. Includes brand-specific authentication guides for Louis Vuitton, Gucci, Jordan, Yeezy, Supreme, and more.