Online stores sell thousands of products and services. Despite all care, mistakes can get made. These mistakes can have severe implications for the seller. A contract once formed is normally binding on the parties. The seller gets bound to sell at the mistaken price. Can an online seller get out of the contract on the ground that the price was a mistake? The only court judgement on the theme is Chwee Kin Keong v. Digilandmall.com Pte Ltd, a judgement of the Singapore High Court. With reference to the judgement, the case explores pricing mistakes by online stores.