Guides to the numbers behind your business
What eBay, Etsy, Amazon, Shopify, PayPal and Square actually take, how to price for profit, and how pay math works. Every guide has a worked example and a calculator to run your own numbers.
- Guides
- 15
- Topics
- 5
- Fee rates checked
- November 13, 2026
- Item price$50.00
- Shipping charged$8.00
- Final value fee (13.6%)−$7.89
- Per-order fee−$0.40
You receive before costs$49.71
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