I have bought and sold on ebay for a few years now, with no problems, nothing major, just as and when I have things to sell, I don't make hardly any money
however I listed a designer handbag a few weeks ago which they removed as apparently it breached "trademark restrictions"... they said I could not re list it for 7 days. no idea why as was genuine 
I then re listed it when the 7 days had gone and it was snapped up via buy it now, buyer v happy, left me good feedback
I am now selling some children's shoes, 2 pairs of nikes and a pair of uggs, again, genuine, originally from Schuh
I have today had a message from them saying they have "indefinitely restricted my ebay selling in clothes shoes and accessories"
although my present listings have been allowed to stand
just, WTF. the only things I ever sell are clothes and shoes and have never had any problems, once or twice I have had people return stuff and i have always sorted it out quickly.
so I "spoke" to their online chat team although I am not convinced I was even speaking to a real human tbh
apparently it will be "looked into" and someone will reply in 48 hours
I hate their facelessness and how they just do whatever the fuck they please am fuming as well at the implication I have done wrong