Interesting bit here[/url:2x3eo806] (UK)
[quote:2x3eo806]The price on display, such as the price on the actual goods, the shelf edge price, the price given in an advertisement or on a website, can form part of what the law describes as 'an invitation to treat'. This means that the price given by the trader forms part of an invitation for you as a prospective buyer to make an offer to buy, which the trader is entitled to either accept or reject. You cannot insist that a trader sells anything at the marked price, whether or not the trader has made a mistake. [b:2x3eo806]However, trading standards can take action against a trader for unfair trading practices such as giving a misleading price[/b:2x3eo806][/quote:2x3eo806]