Hi Brian, good question! When you are listing a card with Raise, you are actually not selling the card to Raise directly, but rather placing your card on the marketplace for other members like yourself to purchase for the price that you set. The reason you have to input the card information is so we here at Raise can verify your card and its balance. This is to avoid selling any invalid cards to a member on our marketplace. Again, members will not be making offers or placing bids, they will be purchasing your card at the price that you set. Of course, if you have any other questions please don't hesitate to give us a call! We're happy to help.