If the listing ends in under 12 hours, you can retract your most recent bid, but only if it's been less than an hour since you placed it. If you are outside that time frame, your best bet is to communicate directly with the seller and persuade them to cancel your bid at their end.
If the auction has finished, you can contact the winner and, if they agree, you can cancel the order. You can only end auction listings with bids one at a time by selecting a valid reason.
How do I cancel an eBay bid? Cancelling an eBay bid can be done via the 'retracting a bid' page, using the 'retract a bid' button. Simply click on this, then select the product you wish to retract your bid for and give your reason for doing so.
As a seller, you can cancel bids on eBay in the following situations: when you agree to a buyer's request, when the item isn't available anymore, if you made an error in the listing, or if you're concerned the bidder might be fraudulent.
Listings with Bids or Offers If the auction ends within 12 hours and has bids, you cannot end the listing early. If the listing ends in more than 12 hours, you can cancel the bids and then remove the listing.
If the auction has finished, you can contact the winner and, if they agree, you can cancel the order. You can only end auction listings with bids one at a time by selecting a valid reason.