Since I'm assuming you don't know already, when you list items, at the bottom of the page there's a link that says "show advanced options" and if you click on there you can set the minimum credit bid to up to 100 credits...which is generally accepted by most bidders on auctions that are free shipping. Great auction, I'm bidding and watching...waiting for some credits to get refunded from jerks who never mailed me items I won, so hope they free up before this auction ends. Good luck!