[djohn]

There are many reasons outside of the eBay TOS that people withdraw bids on cards: the bid was just done to drive up the price (i.e. shill bidding), the player was hot and no longer is hot, the player got injured or involved in a scandal (steroids, DUI, domestic violence, criminal activity, etc), or simply the bidder changed his mind about what they wanted in their collection. While it is against the TOS of eBay to retract for any of these reasons, you can technically still retract a bid and just lie about the reason. That being said, it is frowned upon and very unscrupulous to bid on an auction and then withdraw the bid before the auction ends. In fact eBay now tracks the number of bid retractions and shows it in your bid history. I know there are some sellers that will cancel your bids automatically if you have more than a few bid retractions, so it could end up hurting you in the future if you retract bids now.