FAIR CALCS - RESALE CALCULATOR

Know your number before you list.

Estimate resale profit, compare marketplace fees, or find the minimum sale price required for a target profit.

What it calculates

  • Estimated marketplace and payment fees
  • Profit, margin, ROI, and break-even sale price
  • Minimum sale price for a target profit
  • Side-by-side fee estimates for eBay, Poshmark, Mercari, Etsy, Depop, Grailed, StockX, GOAT, and custom rates

Marketplace fees change and vary. Results are estimates, not tax or accounting advice.

Frequently asked questions

How do I calculate resale profit?

Subtract all selling costs — marketplace fees, shipping, packaging, and item cost — from the sale price. This calculator handles the math with reviewed fee assumptions for eBay, Poshmark, Mercari, Etsy, and custom rates.

What does resale profit margin mean?

Fair Calcs divides estimated profit after entered fees and costs by gross revenue. A useful target depends on the item, risk, time required, return rate, and your business model.

How do I compare marketplace fees side by side?

The comparison section applies the same sale price, item cost, and shipping to every built-in marketplace profile so you can see estimated profit on each platform at once.

What fees do resellers need to account for?

Marketplace final value or commission fees, payment processing, outbound shipping, packaging materials, item sourcing cost, and any promoted listing or subscription fees.