I've only ever had 1 bad experience and that was few years ago when a seller told me the record I was buying off him had a scratch on it (this wasn't in the media condition description). He asked me if I still wanted it, I said no so he then gave me a negative rating and said he hadn't received payment. That's the only negative rating I've had and it brings my buyers rating down. Ive tried to appeal this many times but nothing ever gets done to remove it.