In my opinion, an honest auction will let you bid any amount over the existing bid, but will only add the minimum incremental increase in the bid that changes the high bidder. In other words, if the current bid is $20, the minimum increment is $1, and you bid $30, then the auction should show you the new high bidder with a bid of $21, and then will increase the bid as necessary to outbid others until the bidding goes above $30, at which time you are done unless you place a new high bid. In that scenario, you can just put up the most you are willing to pay for it and forget about it, and be happy if you win and happy if you lose. You also get the merchandise for the minimum amount over whatever anyone else is willing to bid. That is the only type of auction I will bid on.