Best Offer Auctions A Best Offer Auction is an auction where the auctioneer is willing to accept offers from bidders. A Best Offer can consist of anything the bidder can describe. This could be directly a lower offer price than the Approx. Value opening price. It could also be an offering of some other item in exchange for the auction item. Or it could be an item plus some additional cash offering in exchange for the auction item. The auctioneer is able to choose whichever offer he wants to accept.