There have been numerous examples of this in the news, with argos advertising tellies at 10% of their rrp by mistake. The site will (almost always) have small print to cover this sort of eventuality.
Alas, but them's the breaks.
However, a business man selling his yacht on ebay Germany recently was forced to sell it for 20 Euro, though it's worth 10,000, because he forgot to set a minimum price. This *is* enforceable, so watch out for bargainous ebay deals
(, Wed 15 Oct 2008, 13:01, Reply)