you can bid all your credits if you want, the bid wont go up higher until someone out bids your highest bid (example) you bid 8000 the bid goes up when someone bids 8020 or more then it will show you've been out biddded, so people can keep bidding but if no one bids over the bid 8000 then your still the winner, believe me people will bid, you can check whos bidding on the check bids button, does this make any sense to you, I hope this helped. Happy bidding.