Indeed. And sadly the bad thing about Ebay is sellers can 'fine tune' the feedback that gets left, thus. Couple years ago I spent a tennerish plus postage on a clothing bag/suit protector type thing off Ebay, was from a seller with large product turnover. The product was advertised with all the usual guff we've all come to know and love "Hi quality....super tough....etc etc "
It tore as I tried to take it out its plastic bag packaging. A bit miffed, I left them negative feedback and set about trying to find a decent product (Which I haven't to this very day, I don't think they exist)
Day or so later I received an email telling me that if I retracted that feedback, they'd refund me in full. Now, how many people would go for that sort of deal? A very large percentage Id wager. I didn't as it goes, coz I was so p*ssed off and I'm generally a very stubborn bugger. I left my feedback there. But I never got a refund.