Technically speaking, a market is any place where two or more parties can meet to engage in an economic transaction—even those that don't involve legal tender. A market transaction may involve goods, services, information, currency, or any combination of these that pass from one party to another. Markets may be represented by physical locations where transactions are made. These include retail stores and other similar businesses that sell individual items to wholesale markets selling goods to other distributors. Or they may be virtual. Internet-based stores and auction sites such as Amazon and eBay are examples of markets where transactions can take place entirely online and the parties involved never connect physically.