For me it was some Kobe signed cards with uniform swatches. I decided I wanted one that was limited to 25 each, and there were 3 auctions for similar cards all closing on ebay the same night. So I put in snipes on all 3. Well the night of the auction something happened to the snipe website. When I checked the website didn't show that I had won the first card, so I let the next item close, and it still didn't show I had won, so I let the last one close. Next thing I know, I had won all 3!
Well, I wasn't happy about it, but I paid all three since it was my fault. Well, my fault and the snipe website.