Contact Marginory
Accurate fee data is the whole point of this site — corrections and suggestions are always welcome, and fee reports get priority.
Email us
minhtv868@gmail.comWe read everything. Fee corrections are usually verified and published within a few days.
A fee rate looks wrong or outdated
Platforms change fees without notice. If a rate on any calculator doesn't match what your seller dashboard shows, tell us the page and the correct rate — we verify against official documentation and fix it.
Request a calculator
Selling on a platform we don't cover yet, or need a variation of an existing tool (different country, category, or fee scenario)? Suggest it.
General feedback
Confusing result, broken layout, unclear formula — anything that would make the tools more useful.
Want to know how we verify fee data before publishing it? See how Marginory works. For legal pages, see our Privacy Policy and Terms of Service.