The value of every commodity produced in the capitalist way is represented in the formula: C = c + v + s. If we subtract surplus-values from this value of the product there remains a bare equivalent or a substitute value in goods, for the capital-value c + v expended in the elements of production.
For example, if the production of a certain article requires a capital outlay of £500, of which £20 are for the wear and tear of instruments of production, £380 for the materials of production, and £100 for labour-power, and if the rate of surplus-value is 100%, then the value of the product = 400c + 100v + 100s = £600.
After deducting the surplus-value of £100, there remains a commodity-value of £500 which only replaces the expended capital of £500. This portion of the value of the commodity, which replaces the price of the consumed means of production and labour-power, only replaces what the commodity costs the capitalist himself. For him it, therefore, represents the cost-price of the commodity.
What the commodity costs the capitalist and its actual production cost are two quite different magnitudes. That portion of the commodity-value making up the surplus-value does not cost the capitalist anything simply because it costs the labourer unpaid labour. Yet, on the basis of capitalist production, after the labourer enters the production process he himself constitutes an ingredient of operating productive capital, which belongs to the capitalist. Therefore, the capitalist is the actual producer of the commodity. For this reason the cost-price of the commodity necessarily appears to the capitalist as the actual cost of the commodity. If we take k to be the cost-price, the formula C = c + v + s turns into the formula C = k + s, that is, the commodity-value = cost-price + surplus-value.
The grouping of the various value portions of a commodity which only replace the value of the capital expended in its production under the head of cost-price expresses, on the one hand, the specific character of capitalist production. The capitalist cost of the commodity is measured by the expenditure of capital, while the actual cost of the commodity is measured by the expenditure of labour. Thus, the capitalist cost-price of the commodity differs in quantity from its value, or its actual cost-price. It is smaller than the value of the commodity, because, with C = k + s, it is evident that k = C - s.
The category of cost-price, on the other hand, has nothing to do with the formation of commodity-value, or with the process of self-expansion of capital. The investigation will show, however, that in capitalist economics the cost-price assumes the false appearance of a category of value production itself.
The cost-price of the commodity is formed exclusively by the capital actually consumed in its production.
So far we have considered just one element of the value of commodities, namely the cost-price. We must now turn also to the other component of the value of commodities, namely the excess over the cost-price, or the surplus-value.In the first place, then, surplus-value is the excess value of a commodity over and above its cost-price. But since the cost-price equals the value of the consumed capital, into whose material elements it is continually reconverted, this excess value is an accretion in the value of the capital expended in the production of the commodity and returning by way of its circulation.
In its assumed capacity of offspring of the aggregate advanced capital, surplus-value takes the converted form of profit. Hence, a certain value is capital when it is invested with a view to producing profit, or, there is profit because a certain value was employed as capital. Suppose profit is p. Then the formula C = c + v + s = k + s turns into the formula C = k + p, or the value of a commodity = cost-price + profit.
The profit, such as it is represented here, is thus the same as surplus-value, only in a mystified form that is nonetheless a necessary outgrowth of the capitalist mode of production. The genesis of the mutation of values that occurs in the course of the production process, must be transferred from the variable portion of the capital to the total capital, because there is no apparent distinction between constant and variable capital in the assumed formation of the cost-price. Because at one pole the price of labour-power assumes the transmuted form of wages, surplus-value appears at the opposite pole in the transmuted form of profit.
