http://www.dnforum.com/rules.php: 8. Complete your sales! If a member posts "sold" or PM's that he/she will buy your domain, website, service, etc., please attempt to complete the sale in a timely manner. This goes for both parties, please make yourself available to complete the sale as soon as possible. In addition, your word is your bond. If you agree to a deal, you shouldn't back out - even if you receive a higher offer (sellers) or if you think you offered too much (buyers). Do the right thing and the right thing will eventually return to you.
If someone is not following this rule then report the post - we can check back at editing history and only admins & mods will know who reported it (and we don't tattle

).
People should know the risks when posting in the $1 auction. If they have a minimum price in mind, then it should
not be in the $1 auctions.
Edit: Also, if you did "win" the auction and the seler changed the terms or canceled the auction (which they should not be doing) you can leave them appropriate feedback.
Sterling - I think I found the auction in question and I checked the edit history - the end date was never changed, the seller only added the descriptions to each domain. (vcvc etc..).