A sniper can only win if they bid higher than anyone else. It doesn't mater if they bid $100 on a $5 dollar part. If no one bids higher than $5, they get it for $5.50, or whatever the next increment of bid is.
If multiple snipers bid $50, $75, $95, and $100, expecting no one will bid more than $20, then guess what? The highest bidder still wins even though the price is WAY over the value! Who is more stupid, the winner of the loser?
It's an auction. Sale to the highest bidder in the time frame alloted. If it goes for more money than you wanted to pay for it, then someone else wanted it more than you did.
Bid high or stay at home.
Cheers,