The price system refers to a system of resource allocation in which prices are determined through the interaction of supply and demand in the market. In this system, prices play a crucial role in allocating resources to their most valued uses. The prices of goods and services reflect the scarcity of resources and the preferences of consumers, and they act as signals that guide producers and consumers to make decisions about what to produce, how much to produce, and how much to consume. The price system is used in most modern economies as a means of coordinating the activities of producers and consumers, and it is often seen as an efficient way of allocating resources in a market economy.