Use a realistic sale price
Base the estimate on relevant sold evidence where possible, not the highest active asking price you can find.
Free reseller sourcing tool
Calculate your maximum buy price before you source inventory.
Enter the price you realistically expect an item to sell for, then subtract fees, shipping, other costs, and the profit you want to keep. Inzoly shows the highest acquisition price that still protects your targets.
- No account required
- No AI credits
- Runs in your browser
- Transparent formula
Enter your sourcing assumptions
Use a realistic expected sale price and the costs you normally absorb. All calculations happen in your browser.
Maximum buy price
$16.00
This is the lower of the price that protects your target dollar profit and the price that protects your target margin.
Max for target profit
$25.00
Max for target margin
$16.00
Estimated fees
$9.00
Target margin
40%
Planning estimate only. Actual selling fees, shipping, returns, taxes, condition, sell-through, offers, and other costs can change the result.
The formula behind the maximum buy price
Start with expected sale price. Subtract estimated marketplace and promotion fees, seller-paid shipping, other item costs, and the dollar profit you want to keep. Inzoly also calculates a separate ceiling that protects your target profit margin, then uses the lower ceiling.
Maximum buy price = the lower of (sale price − fees − shipping − other costs − target profit) and (sale price − fees − shipping − other costs − target margin amount)
Protect profit and margin
A low purchase price can still be a poor buy when fees, shipping, storage, or slow demand consume the margin.
Compare with the asking price
Enter the store or seller asking price to see projected profit, margin, ROI, and how far the price sits above or below your target ceiling.
Frequently asked questions
Sourcing calculator questions
What is a maximum buy price for reselling?
It is the most you can pay for an item while still leaving room for expected selling costs and the profit or margin target you choose.
Should I use asking prices or sold prices?
Use relevant recent sold evidence when possible. Active asking prices can provide context, but they do not prove what buyers actually paid.
Does the calculator guarantee profit?
No. It estimates a buying ceiling from the inputs you provide. Actual fees, shipping, returns, discounts, demand, and sale price can change the final result.
Before you run the numbers, use the free reseller sourcing checklist to verify condition, sold evidence, shipping, storage, and other risks.
Want Inzoly to do more than the math?
The full Sourcing Assistant starts with item photos and an asking price, then adds identification, market evidence, Buy / Maybe / Pass guidance, quick/expected/top-dollar scenarios, a risk score, negotiation guidance, and one-tap inventory handoff.