When I see something I want on eBay, I go back and bid the maximum i'm willing to spend on it at the last second.
If I win, great! If I loose, well.. I only lost because somebody was willing to pay more for it than I was.
Yea, it does suck to loose an item by a dollar or so, but that's the great thing about eBay.. there'll be another one up for auction soon, if not immediately.