How to Calculate Your eBay Profit

eBay's main fee is the final value fee — about 13.6% of the total sale (item + shipping) for most categories, plus a $0.30 per-order fee. Payment processing is already included. If you promote the listing, an ad fee comes out too.

Net profit = (item price + shipping you charge) − product cost − your shipping cost − eBay fees. Margin is profit divided by total sale. ROI is profit divided by what you paid for the item.

Margin tells you how efficient the sale was; ROI tells you how hard your sourcing dollars worked. For resellers, ROI is usually the more useful number.

Sell a $50 item with $8 shipping — total sale $58. eBay fees: 13.6% of $58 = $7.89, plus the $0.30 per-order fee = about $8.19. If the item cost you $20 and shipping cost you $6, your profit is $58 − $20 − $6 − $8.19 = about $23.81. That's roughly a 41% margin and a 119% ROI on what you paid for the item.

Forgetting that the final value fee applies to shipping you charge, not just the item. Leaving out your own shipping cost when the buyer's shipping charge didn't cover it. Ignoring the flat $0.30, which eats hard into low-priced items. And forgetting Promoted Listings ad fees on items you promoted.

It depends on the category, but most resellers aim for at least 25–35% net margin after fees, so a slow month or a return doesn't sink the listing. Anything under 15% leaves no cushion.

eBay updates its fees and category rates from time to time. Confirm your category's current rate in eBay's fee schedule before you price.