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Resale Profit Calculator: Estimate Profit Before You Buy
Estimate what may be left from a resale before you buy. Enter your expected sale price and costs to see an illustrative amount after the fee assumption.
Resale profit calculator
Enter amounts in USD. This calculator uses your inputs; it does not look up live sale prices, postage, or marketplace fees.
Formula: sale price minus the percentage fee, purchase cost, seller-paid shipping, packaging, and other costs. The fee is applied only to the sale price. Check whether your marketplace also charges fixed fees or fees on shipping or tax.
How to estimate resale profit
Start with a realistic sale price based on recent completed sales for the same model, condition, and included accessories. Active asking prices show what sellers hope to receive; they do not confirm that an item sold.
For example, with a $50 expected sale price, $10 purchase cost, $8 seller-paid shipping, a 15% assumed fee, and $2 packaging, the estimated amount left is $22.50. This is a worked example using assumptions, not a prediction or a guarantee.
Remember to account for returns, taxes, storage, your time, and costs that vary by platform or transaction. Test the numbers using a lower sale price and higher shipping estimate to see how much room the deal has.
For a practical buying checklist, read how to price thrift store finds before you buy. To research realistic sale prices, see how to compare sold listings with asking prices.