I'd leave one star if the app had always been as bad as it is now. When I started in 2018, fees were only 10%. Once sales increased during the pandemic, Mercari raised fees to nearly 15% w/o making any noticeable improvements. Now they require your tax info, and are the only platform that does. I've grossed nearly the limit and despite already submitting a W9 (reluctantly), I am no longer able to make sales because they're not processing it & will not respond to support requests.