Manufacturers and stores in America will often take back things you buy if they don't work properly. You usually need your receipt to take advantage of these offers. The store policies are usually better than the manufacturers. They will often give you your money back if you decide you don't like what you bought. American law requires that their return policies have to be posted in writing near the cash registers. Manufacturer's warranties normally only cover problems that were built-in to their merchandise. Both the stores and manufactures offer to take back merchandise to make people feel comfortable about buying it. This is especially true of expensive items, such as electronics and cars.