If you sell on-line, whether large or small and you despatch goods then you definitely need to be clued up on the Distance Selling Regulations. If you don’t then you might get a nudge from the Office of Fair Trading and some unhappy customers. Basically the act provides the customer 7 days as a cool-off period for which they can notify you that they intend to return the goods and then a further period in which to actually do so. As the seller you are also obliged to refund the full amount including the postage cost originally charged and without additional charges. You can read more info on the OFT website.