Can I retract or cancel my bid?
As a general rule, you can't retract, remove, or cancel a bid. When you place a bid, you agree to pay for the item if you're the winning bidder.
However, honest mistakes sometimes occur. You can retract a bid if you have a valid reason for doing so as defined by eBay policy and you retract the bid within the required time period.
Valid reasons for retracting a bid include:
You accidentally entered the wrong bid amount. For example, you bid $99.50 instead of $9.95. If this happens, you need to reenter the correct bid amount right away.
The item's description changed significantly after you entered your last bid. For example, the seller updated the details about the item's features or condition.
You can't reach the seller by telephone or email.
Changing your mind isn't a valid reason for retracting a bid. Be sure to carefully review listings before bidding.
To retract a bid or Best Offer: