Can I cancel or lower my bid?

No. All bids are binding and final.

Once a bid is submitted, the bidder is obligated to pay the amount of any bid (plus all applicable fees) that they submitted or authorize (or is otherwise submitted or authorized through or under the bidders Member Account) if the bid is accepted. This includes all bids placed during the Preliminary Bidding and the Live Auction and applies regardless of how or where the bid is placed.

Can I cancel or lower my offer?
No. Once an offer is made, it cannot be retracted or canceled. If your bid or offer is accepted, you will be contractually bound to purchase the vehicle for your bid price plus any applicable auction and AutoBidMaster fees.
A seller may also counter offer, in this case you can only accept his price or submit another offer.
If a seller reject your offer you don’t have to pay.

I was the winner for the “On Minimum Bid” auction but the seller minimum wasn’t reached. Can I cancel?
No. Only seller can cancel or approve the final bid.