Value, Price & Profit, Chapter 10
Profit is Made by Selling a Commodity at its Value
Suppose an average hour of labour to be realized in a value equal to sixpence, or twelve average hours of labour to be realized in six shillings. Suppose, further, the value of labour to be three shillings or the produce of six hours’ labour. If, then, in the raw material, machinery, and so forth, used up in a commodity, twenty-four hours of average labour were realized, its value would amount to twelve shillings. If, moreover, the workman employed by the capitalist added twelve hours of labour to those means of production, these twelve hours would be realized in an additional value of six shillings. The total value of the product would, therefore, amount to thirty-six hours of realized labour, and be equal to eighteen shillings. But as the value of labour, or the wages paid to the workman, would be three shillings only, no equivalent would have been paid by the capitalist for the six hours of surplus labour worked by the workman, and realized in the value of the commodity. By selling this commodity at its value for eighteen shillings, the capitalist would, therefore, realize a value of three shillings, for which had paid no equivalent. These three shillings would constitute the surplus value or profit pocketed by him. The capitalist would consequently realize the profit of three shillings, not by selling his commodity at a price over and above its value, but by selling it at its real value.
The value of a commodity is determined by the total quantity of labour contained in it. But part of that quantity of labour is realized in a value for which and equivalent has been paid in the form of wages; part of it is realized in a value for which NO equivalent has been paid. Part of the labour contained in the commodity is paid labour; part is unpaid labour. By selling, therefore, the commodity at its value, that is, as the crystallization of the total quantity of labour bestowed upon it, the capitalist must necessarily sell it at a profit. He sells not only what has cost him an equivalent, but he sells also what has cost him nothing, although it has cost his workman labour. The cost of the commodity to the capitalist and its real cost are different things. I repeat, therefore, that normal and average profits are made by selling commodities not above, but at their real values.