Re: Difficult to compensate
And the useful trick is also never bid a round pound/dollar/euro (as appropriate) amount - always add a touch on. For example, if your bid would be £10, bid £10.12 or something like that. It seems that most people (sellers and buyers) like round figures, so they will tend to bid them. If you bid loose-change over that, then your bid will be larger than theirs and you win.
I've won several auctions over the years by doing that, combined with using sniping rather than early bidding.