T.O.D.
I have had mostly good luck with ebay. Before Half.com was bought up by ebay, I sold a lot of vhs tapes that I had replaced with DVDs. Since ebay bought them out, there are so many differen copies of every possible movie, available at various prices, that I finally gave up listing them. Purchase-wise I have gotten several things that I thought were good deals, and only once or twice was I disappointed.
My sister, on the other hand, was late to the show. She just discovered ebay last fall. Unfortunately, she tends to shop after a couple of glasses of wine. The results are not always good. She bid $67.50 for a Coach purse online, but she failed to put in the decimal point. I managed to get her out of that mess, but there have been a few other mistakes.