Guilty until proved innocent
Another issue, which I've been the victim of in the past, is the idea that eBay is infallible.
Essentially, if someone in eBay decides that you are flogging stolen goods, or pirate software, or are in violation of some sort of license agreement, your listing is pulled.
No ifs, no buts, no warnings or appeals. Even when you produce documented evidence, in the form of invoices, license agreements, or certificates of authenticity, eBay will not capitulate, let alone apologise.
And god forbid you should try and query exactly what grounds they have for ending the listing. They simply keep emailing the same terms and conditions (the whole thing!) without highlighting any particular section or pointing out how you are in violation (probably because it is impossible to show the terms breached if none have been breached).
In short, eBay's word is law, and there is no higher power to appeal to.
Roll-on the day my bricks and mortar shop is completed!