A market is one of many varieties of systems, institutions, procedures, social relations and infrastructures whereby parties engage in exchange. While parties may exchange goods and services by barter, most markets rely on sellers offering their goods or services (including labor) in exchange for money from buyers. It can be said that a market is the process by which the prices of goods and services are established.

For a market to be competitive, there must be more than a single buyer or seller. It has been suggested that two people may trade, but it takes at least three persons to have a market, so that there is competition on at least one of its two sides. However, competitive markets rely on much larger numbers of both buyers and sellers. A market with single seller and multiple buyers is a monopoly. A market with a single buyer and multiple sellers is a monopsony. These are the extremes of imperfect competition.

In mainstream economics, the concept of a market is any structure that allows buyers and sellers to exchange any type of goods, services and information.

Supermarkets usually allocate large budgets to advertising, typically through newspapers. They also present elaborate in-shop displays of products. The shops are usually part of corporate chains that own or control (sometimes by franchise) other supermarkets located nearby—even transnationally—thus increasing opportunities for economies of scale.

In market you always can see many sticker labels on each kind of goods. It is a way which can Convey product-specific information very Intuition.

Manufacturers of goods, materials, production date range of information are all can be displayed in sticker labels.

With these sticker labels, market only need very little cost but can build a convenient storage management system. It is very useful and helpful.