A seller's right to cancel a bid with a particular person whom they feel uncomfortable conducting business with.
A seller cancels the bid of a buyer. This can occur if the seller feels that the buyer will not complete the transaction. To cancel a buyer's bid, click on "Cancel a Buyer's Bid" under the sell menu.
This is were the seller does not accept a bid from a specific bidder. In eBay auctions the seller always has the right to refuse a bid.