Many people have had "issues" with Amibay.
I left the place after being berated by admins after I asked a simple question about an item a user was selling. I'd give away (and have) items before using Amibay to try and sell them, or alternatively, never own anything Amiga if the only place to buy through was Amibay.
But maybe I've just had bad luck, along with dozens of other people who will gripe about the admins there
Personal opinion only, ofc.
