Reveal Auction: Instead of placing a bid, users reveal price which appears with a buy now link. If user likes the price they can buy it within 10 seconds or it will disappear again. With each price reveal, price drops by a set margin.

Bids Back: Bids back or cash back auctions are the auctions, where users get a defined percentage back if they spend qualification number of bids. Both qualification number of bids and percentage is controllable from admin panel.

Reverse Auction: It is an ordinary auction except that instead of going up, price goes down with each bid. You have to be the lowest bidder to win the auction. Rest of the rules stay same like bid butler, bid history, bid credits etc.

Buy Now: Users can buy items on RRP subtracting whatever credits they have already spent. This was you can assure users that they will never pay more than RRP of the item. While creating an auction, you define how many items are available for buy now and only a maximum of that number of items are sold. If that number is met, this option will disappear and users are able to see how many items are available as buy now.