It refers to the price levels at which newly produced goods and services would have to be sold by the producers, in order to reach the normal, average profit rate on the capital invested in producing them: they determine the cost structure of capitalist production.
It refers to the price levels at which newly produced goods and services would have to be sold by the producers, in order to reach the normal, average profit rate on the capital. This capital is invested in producing them. They determine the cost structure of capitalist production.