Bidding box for home-played games. Use of bidding boxes has several advantages over oral bidding: it reduces noise in the room, prevents bidding being overheard at neighboring tables, allows easier review of the auction, and reduces the opportunity to pass unauthorized information to one's partner (intentionally or not) by the manner and intonation in which one makes one's bid. A bidding box is typically a plastic box with two slots, each containing a set of bidding cards. One slot contains 35 cards with symbols of bids (5 denominations—clubs (), diamonds (), hearts (), spades (), and notrump (NT)—in seven levels of bidding,
Bidding fee auction been paid. Some bidding fee auction sites have been shut down by state governments after investigations. Wavee US, LLC, settled with the Governor's Office of Consumer Protection in Georgia and agreed to close its website after the office received complaints about merchandise not being shipped in a timely fashion. Washington state shut down PennyBiddr after a lawsuit in which the state accused PennyBiddr of using shill bidding to drive up prices and extend auctions. In addition, several auction sites which claimed to be Better Business Bureau "Accredited" were not members of the BBB or had poor ratings with the BBB.