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A free price system or free price mechanism (informally called ''the price system'' or ''the price mechanism'') is a mechanism of resource allocation that relies upon monetary prices set by the interchange of supply and demand. The resulting prices serve as ''signals'' communicated between producers and consumers which serve to guide the production and distribution of resources. Through the free price system, supplies are rationed, income is distributed, and resources are allocated. A free price system contrasts with a fixed price system where prices are administered by government in a controlled market. The price system, whether ''free'' or controlled, contrasts with physical and non-monetary economic planning. ==Mechanics of a free price system== Rather than prices being set by the state, as in a command economy with a ''fixed price system'', prices are determined in a decentralized fashion by trades that occur as a result of sellers' ''asking prices'' matching buyers' ''bid prices'' as a result of subjective value judgement in a market economy. Since resources of consumers are limited at any given time, consumers are relegated to satisfying wants in a descending hierarchy and bidding prices relative to the urgency of a variety of wants. This information on relative values is communicated, through ''price signals'', to producers whose resources are also limited. In turn, relative prices for the productive services are established. The interchange of these two sets of prices establish market value, and serve to guide the rationing of resources, distributing income, and allocating resources. Those goods which command the highest prices (when summed among all individuals) provide an incentive for businesses to provide these goods in a corresponding descending hierarchy of priority. However, the ordering of this hierarchy of wants is not constant. Consumer preferences change. When consumer preferences for a good increase, then bidding pressure raises the price for a particular good as it moves to a higher position in the hierarchy. As a result of higher prices for this good, more productive forces are applied to satisfying the demand driven by the opportunity for higher profits in satisfying this new consumer preference. In other words, the high price sends a ''price signal'' to producers. This causes producers to increase supply, either by the same firms increasing production or new businesses coming into the market, which eventually lowers the price and the profit incentive to increase supplies. Hence, the now lower price provides a price signal to producers to decrease production and, as a result, a surplus is prevented. Since resources are scarce (including labor and capital), supplies of other goods will be diminished as the productive resources are taken from other areas of production to be applied toward increasing output of the good that has risen in the hierarchy of consumer preferences. Also, as resources become more scarce the price increases, which signals to consumers to reduce consumption thereby ensuring that the quantity demanded does not exceed the quantity supplied. It is in this way that the free price system persuades consumers to ration dwindling resources. Hence, supply and demand affects price while at the same time, price affects supply and demand. If prices remain high because increases in supply cannot keep pace with demand, then this also signals other business to provide substitute goods in order to take advantage of profit opportunities. Individual employments and incomes are also guided by the price system. Employment will move toward those goods and services that consumers value and away from those with declining importance to consumers as a result of changes in prices. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Free price system」の詳細全文を読む スポンサード リンク
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