On ebay these days, when you go to bid:
"Reminder: Even if you don't bid again, you could still end up as the winning bidder if higher bids are retracted or canceled. Continue to check the status of this item until it ends."
Well that's wonderful. Place a bid, get outbid, go to buy the same thing from a different seller, and you could still be on the hook for the first one. How long has ebay had this policy?