In commerce, a retail trader buys goods or products in large quantities from manufacturers or importers, either directly or through a wholesaler, and then sells individual items or small quantities to the general public or end user customers, usually in a shop, also called store. Retailers are at the end of the supply chain.
Many shops can be part of a chain: a number of similar shops with the same name selling the same products in different locations. The shops may be owned by one company, or there may be a franchising company that has franchising agreements with the shop owners (see also restaurant chain).
A large shop is called a superstore or megastore. A shop with many different kinds of articles is called a department store.
Shops may be on residential streets, or in shopping streets with little or no houses, or in a shopping center or shopping mall. Shopping streets may or may not be for pedestrians only. Sometimes a shopping street has a partial or full roof to protect customers from precipitation.
Some shops sell second-hand goods. Often the public can also sell goods to such shops. In other cases, especially in the case of a nonprofit shop, the public donates goods to the shop to be sold (see also thrift store).
The term retailer is also applied where a service provider services the needs of a large number of individuals, such as with telephone or electric power.
Retail prices are often so-called psychological prices or odd prices: a little less than a round number, e.g. $ 6.95.
Often prices are fixed and displayed. Alternatively, there is price discrimination (a customer has to pay more if the seller assumes that he or she is willing to do that due to wealth, carelessness or eagerness to buy) and possibly a bargaining situation. It is a "fight" about how the total surplus is divided into consumer and producer surplus, with for both parties the "threat" that there is no surplus at all because the sale is off.