Listen, folks, take it from a guy who has bought and sold hundreds of items for thousands of dollars on ebay:
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DO NOT BID !
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SNIPE ONLY !
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I promise you, that if you decide, in advance, what you are truly willing to pay for an item, and put in a snipe at that price, you are more likely to win, at a lower price, than if you bid the same amount.
There are always exceptions, and ebay will always put in the highest bid AFTER the highest snipe, but making a formal public bid is simply the same as "showing your hand" in a card game.
Trust me. Try it 10 times each way, controlled, scientifically.
Heck, prove me wrong, if you can. But I do not believe that you can.
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PS - on any item that I, personally, am bidding on, disregard the above advice and put in your maximum bid as early as possible.