I love it when that happens, makes me smile, I don't win much on ebay and if I do win I get worried that there must be something about it that I have missed or I have bid on a pile of rubbish.
I no longer bid on anything on eBay after striking too many instances of the seller acting as dummy bidders. If they don't have a buy it now price that suits me I'm not interested. I have reported some to eBay but I don't know if they ever actually do anything about it.