The short answer: eBay is usually cheaper per sale — but Amazon's traffic can more than make up for it.
The numbers ($50 item)
- eBay: 13.25% final value fee + $0.30 = ~$6.93
- Amazon: 15% referral = $7.50 (+ FBA fee if you use fulfillment)
Beyond fees
- Amazon: massive built-in demand, Prime trust, FBA logistics — higher fees, higher volume.
- eBay: lower fees, auction format, strong for used/unique items — you're the marketer.
Run your own numbers in our eBay Fee Calculator and Amazon Fee Calculator, then compare all 14 platforms on the comparison page. Many sellers do both: Amazon for volume, eBay for margin.