If I set up an auction there is a bid history http://omegatron.net/classifieds/sho....php?product=2
Of course the other members highest bids would not be shown this would be unethical. The user when submitting a bid is notified they have to bid higher. The whole point of having a max bid is so when someone tries to outbid you get bumped up. Every auction I know of works this way.