it won't show you another bidders max amount that they have bid, only what ebay has last bid for them. so if someone put in a max of say $50, it would still of only shown $10 when you looked. if you bid 11, ebay would automatically bid on their behlaf, and their max amount will now show $12, etc etc. you can tell if someone is bidding for the buyer, as they will keep outbidding you by small amounts till the last minute, then stop so you win - or you see the item get relisted after being won by the "other bidder"