A few times I've put in bids on ebay on items where I know that I can buy them from another etailer for a particular set price. I thus, sensibly enough, I think, have fixed my maximum bid at around that particular price (why bid more when you know you can buy it for less?). I've then watched, slack-jawed with amazement, as idiots have bidded way over that set price, and have ended up paying twice or more what the item is worth. I'm new to ebay, but I guess this happens all the time. Why do people do it? Don't they check the market value of items before bidding? I should stress that I'm talking here about items which are readily available (books, CDs, etc) where a few seconds search on a search engine would tell you how much etailers are charging for the same items.