I find it amusing how often if I make my initial bid in exactly the next auto-bid amount a shill bids over me, sees I don't have a higher max bid and retracts. I bet that happens in about 1 out of 4 auctions.

Because of this and for general principals I *never* take advantage of "Second Chance Offers". When I get am SCO I politely decline, explaining that while I know this auctioner is honest it is my practice not to support shilling by accepting SCO's.