For most economists, the concept of production prices corresponds roughly to Adam Smith's concept of "natural prices" and the modern neoclassical concept of long-term competitive equilibrium prices under constant returns to scale.For an historical discussion, see Ronald L. Meek, Studies in the labour theory of value. New York: Monthly Review Press, 1975. Nevertheless, the function of prices of production within Marx's theory differs from both classical political economy and neoclassical economics.
