Mail order businesses sell goods to customers who place orders remotely rather than buying in person at a shop. Orders are commonly made through catalogues, websites or other remote sales channels, and goods are sent to the customer by post or courier. The category can cover retailers specialising in particular products as well as businesses selling a broad range of items. Customers may be able to choose from products such as clothing, household goods, books, food, gifts, electronics or specialist supplies. Services typically include providing product information, taking and processing orders, arranging delivery and handling enquiries, returns or exchanges. Some businesses offer repeat ordering or subscriptions, while others fulfil individual purchases. Delivery options, payment methods and returns policies vary by seller and by the goods supplied.