How to use the eBay Reseller Calculator
- Look up recent sold prices for the item and enter a realistic sale price.
- Enter postage and packaging costs.
- Choose a profit amount or ROI target and press Calculate.
Formula
Net = sale price + shipping − eBay fees − postage − packaging
Max buy price = net − target profit, or net ÷ (1 + target ROI)
Examples
- Sells for 40, postage 7, packaging 1, default rates, target 10 profit: fees 5.84, max buy price ≈ 16.16.
- Same item, 100% ROI target: max buy price ≈ 13.08.
Frequently asked questions
Where do the default rates come from?
From eBay’s official selling fees pages for eBay.com, for most categories with no store subscription, checked on 27 October 2026. Some categories (for example certain clothing, collectibles, jewellery or business equipment) and store subscribers pay different rates, so change the fields to match your case.
Profit or ROI target: which is better?
A fixed profit target suits higher-priced items; an ROI target keeps cheap items worth your time and protects your cash on more expensive ones.