Enter your sale price and costs to see your real per-unit profit after marketplace fees — including margin, ROI, and the break-even price you should never sell below.
Marketplace fees$0.00
All-in cost per unit$0.00
Net profit per unit$0.00
Profit margin0%
ROI on cash spent0%
Break-even price$0.00
Reference only. Fee presets are typical category rates as of 2026 — actual rates vary by category,
plan, and promotions (Amazon 8–17%, eBay 12–15% plus $0.30/order, Etsy adds a $0.20 listing fee).
Check your seller dashboard for the exact schedule.