Bundle Discount Optimizer 2026: Profit Floor and Counter Offer Calculator
Calculate profitable bundle discounts with platform fees, combined shipping savings, target-profit floor, return-risk reserve, sell probability, and copy-ready counter offer.
What this tool helps you do
Find the bundle discount that clears your target profit after platform fees, shipping savings, item costs, return-risk reserve, and sell-through probability.
Interactive inputs and calculations load after the app boots. Use this prerendered preview to understand what the tool covers before opening the live experience.
Best for
- bundle discount calculator
- bundle discount optimizer
- poshmark bundle discount calculator
- mercari bundle calculator
- depop bundle calculator
Bundle offer floor workflow
This optimizer answers whether to accept, counter, or avoid a buyer bundle. It compares separate sales against a discounted bundle after platform fees, item cost, combined shipping, return-risk reserve, and the seller target-profit floor.
The output is an offer decision, not a generic discount rule. Slow inventory can justify a lower margin when bundle probability and shipping savings are strong, while fast singles should stay separate unless the buyer clears the floor.
- Inputs: item prices, item costs, platform, single shipping, bundle shipping, target discount, target profit, sell probabilities, and return-risk reserve.
- Output decision: bundle, sell individually, counter higher, or do not bundle at this price.
- Risk prevented: accepting a friendly bundle offer that drops below cost after fees and shipping.
Bundle platform constraints
| Platform | Rule to check | Seller action |
|---|---|---|
| Mercari | Buyer bundle flow supports multiple items from one seller and has price/item constraints | Watch the target floor and price limits before accepting. |
| Poshmark | Native bundle offers can include seller discounts and shipping discounts | Counter from the target floor before adding a shipping discount. |
| Depop | Bundle sales appear as bundle transactions with payment-processing considerations | Model one transaction and any shipping discount before offering. |
Bundle and fee sources checked August 8, 2026
Mercari bundles
Official Mercari guide for bundle offer flow, item count, and price limit context.
Mercari seller fees
Official Mercari seller-fee page for fee basis used in bundle math.
Poshmark bundles
Official Poshmark help page for buyer bundle behavior.
Poshmark seller fees
Official Poshmark seller-fee reference for bundle total commission.
Depop bundles
Official Depop bundle help reference.
Depop seller fees
Official Depop fee reference for seller and processing scope.
Frequently Asked Questions
What bundle discount should I offer?
Offer the largest discount that still clears your target-profit floor. The right discount depends on platform fee, item cost, combined shipping, return risk, and whether a bundle has a better chance to sell than the items separately.
When is bundling better than selling individually?
Bundling is better when shipping savings and higher bundle sell probability outweigh the discount. It is most useful for slow movers, related clothing pieces, same-size lots, and low-ticket items where one shipment improves economics.
How does the target floor work?
The target floor is the minimum bundle sale price needed to hit your selected net profit after fees, COGS, shipping, and return-risk reserve. If the entered discount drops below it, the tool recommends a counter.
Can I use this for Mercari, Poshmark, and Depop bundles?
Yes. The calculator uses the shared marketplace fee engine and also flags bundle-specific constraints, such as Mercari item and price limits, so the offer math matches the platform flow.
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Guides related to this tool
How to Price Resale Items With Sold Comps and Market Data
Choose true sold comps, remove outliers, adjust for condition and fees, calculate a price floor, and set a markdown rule without racing to the bottom.
Poshmark Fees 2026: 20% Commission Net Payout Math
Complete Poshmark fee guide for resellers in 2026. Understand commission structure, shipping economics, offer strategy, bundle math, and how to protect net margins on every sale.
Depop Fees 2026: Shipping, Payout, and Net Profit
Depop fees and selling fees guide for 2026. See payout timing, shipping math, and the net profit rules to use before you accept an offer.