To begin this series on key concepts in the political economy of unequal exchange, we introduce the notion of price of production schemas, based on average profits and cost-prices. The concept of the "price of production" is a central element of the economic analysis outlined in Volume III of "Capital." The price of production represents the average cost of production for a commodity in a given industry, including not only the direct costs of labor and materials but also a portion of the total capital invested in fixed assets (machinery, buildings, etc.). It is distinct from market prices, which can fluctuate due to supply and demand dynamics.
To learn more, here are the two chapters of Volume III that cover this subject: https://www.marxists.org/archive/marx/works/1894-c3/ch09.htm