Remember that AS submits one bid on your behalf, and one only. It's eBay that establishes a proxy reserve and "bumps up" the high bid as other bids are made. That's why, as Sara says, it's best to bid your max. There won't be many other bids made after yours, if any, since your snipe comes in at the very end of the auction. It's an interesting point Sara raises about winning by less than one increment, and I think she's right on the money with that one.