ABSTRACT
So, the barter relation defines our area. It jettisons from the body of facts everything that is not purely economic. Of course it is apparent that in general the prices of goods are usually closely linked to their costs and that the barter relation can often be defined as the relations of costs. In these cases that is definitely not wrong and to say that the price is a function of the costs cannot be denied in most cases. It is the practical shortcomings, the shortcoming in the practical scientific work that makes people reject the cost principle. It fails especially in the case of non-increasable goods and in addition in the explanation of monopoly prices. One starts with the needs and defines the economic goods as things from the outer world that stand in a causal connection to the satisfaction of needs.
