Prices determine how resources areto be used They are also the means by which products and services that are inlimited supply are rationed among buyers. The price system of the United Statesis a complex network composed of the prices of all the products bought and soldin the economy as well as those of a myriad of services, including labor,professional, transportation, and public-utility services. The inter relationships of all these prices make up the “system” of prices. The price of any particular product or service is linked to a broad, complicated system of prices in which everything seems to depend more or less upon everything else