“If the economy is producing efficiently, scarcity values must be equal to opportunity costs, and their common value is the efficiency price... An economy is efficient, as opposed to just production efficient, if it is impossible to make anyone better off without making someone else worse off. In addition to producing efficiently, the final consumers must have exhausted all possibilities of mutually beneficial exchange. This in turn requires they all face the same market prices and that these are equal to efficiency prices...The case for removing distortions and moving market prices closer to efficiency prices rests on the argument that prices influence production efficiency and the reform will increase production efficiency.”