The item’s description changed: If you bid on something and then the seller updates the description, you have the right to withdraw your bid. It wouldn’t be fair, after all, to force you to take something that you now realise you don’t want. The seller is uncontactable: If emails to the seller bounce and they don’t answer their phone, then the auction obviously can’t continue, and you can cancel it. eBay hide away the bid retraction form a bit, because they don’t like people using it. You can find it by going here: http://cgi1.ebay.com/aw-cgi/eBayISAPI.dll?RetractBidShow.

Conference phones