all you have to do is bid,and stay the high bidder,just check if you have enough credits.It will tell you how many you can spend.and if you win this action ,i will send you the item.It goes by credit there is no money changing hands,so happy bidding.
o.k. how many credits do you have?this start with 100 credit if no one outbid you it is yours Otherwise you bid over,it will tell you how many credit you can spend.