I don't think sniping software is a panacea: at the end of the day you still have to make a decision in advance as to what your max bid will be.
If you decide an item is worth no more than, say, £50 to you, but it eventually goes for £52, you may well think, oh, I'd have paid that. But that person who won it with a £52 bid may have actually had an £80 max bid. There's no way you could know. I think you have to accept that some things will slip through your grasp. Another point is that many of the people bidding are simply intending to re-sell; they don't want the goods for themselves. But there may be a price which makes it uneconomic for the re-sellers, but still represents a worthwhile buy for the guy who wants the parts for himself.
Hope this makes sense!
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