When you post and auction, look for show advanced options, find allow bidders to get this item now, mark that and a box will come up where you can put any amount of credits you want for the item, it does cost you credits to use that ,option, the amount has to be higher then the starting bid, and not below 2000 credits ,, hope this helps, you can only post get it now before any bids are placed, once a bid is placed you can not add the get it now option ,