Any declined credit card charges must be settled within 48 hours following the conclusion of the auction to avoid a dispute filed with Proxibid. If you wish to pay using a method other than the card on file, you must contact the auction company BEFORE the start of the auction. Internet Premium : 15% Participation Requirements: Valid Credit Card required for bidding approval Payment Options: Visa, MasterCard, and Discover Visa MasterCard Discover Payment Instructions: Credit card on file will be charged immediately following the auction.