Help improve the calculators

Sellers see fees that aren't published anywhere else. If you share what your seller account shows, other sellers get better numbers — and so do you.

• Nothing you send appears on the site straight away. A person checks every report first.
• A commission is shown only after at least two sellers report the same rate, and it is labelled as reported by sellers — separate from fees we verified on official pages.
• No account needed. Your email is optional and only used to tell you when the value is added.