The costs of preserving this supply in buildings, of additional labour, etc., mean a positive loss. The buyer he would ultimately find would laugh in his face if he were to say to him: "I could not sell my goods for six months, and their preservation during that period did not only keep so and so much of my capital idle, but also cost me so and so much extra expense." "Tant pis pour vous!" the buyer would say. "Right here alongside of you is another seller whose wares were completed only the day before yesterday. Your articles are shop-worn and probably more or less damaged by the ravages of time. Therefore you will have to sell cheaper than your competitor." The conditions under which a commodity exists are not in the least affected by whether its producer is the real producer or a capitalist producer, hence actually only a representative of the real producer. He has to turn his product into money. The expenses incurred by him because of the fixation of the product in the form of commodities are a part of his individual speculations with which the buyer of the commodities has no concern. The latter does not pay him for the time of circulation of his commodities. Even when the capitalist keeps his goods intentionally off the market, in times of an actual or anticipated revolution of values, it depends on the advent of this revolution of values, on the correctness or incorrectness of his speculation, whether he will recover his additional costs or not. But the revolution in values does not ensue in consequence of his additional costs. Hence in so far as the formation of a supply entails a stagnation of circulation, the expense incurred thereby does not add to the value of the commodities. On the other hand there cannot be any supply without a stay in the sphere of circulation, without capital staying for a longer or shorter time in its commodity-form; hence no supply without stagnation of circulation, just as no money can circulate without the formation of a money-reserve. Hence no commodity circulation without commodity-supply.
If the capitalist does not come face to face with this necessity in C'---M', he will encounter it in M---C; if not with regard to his own commodity-capital, then with regard to that of other capitalists, who produce means of production for him and means of subsistence for his labourers.
Whether the formation of a supply is voluntary or involuntary, that is to say, whether the commodity-producer keeps a supply intentionally or whether his products form a supply in consequence of the sales resistance offered by the conditions of the process of circulation itself cannot effect the matter essentially, it would seem. But for the solution of this problem it is useful to know what distinguishes voluntary from involuntary supply formation. Involuntary formation arises from, or is identical with, a stagnation of the circulation which is independent of the knowledge of the commodity-producer and thwarts his will. And what characterises the voluntary formation of a supply? In both instances the seller seeks to get rid of his commodity as fast as ever. He always offers his product for sale as a commodity.
If he were to withdraw it from sale, it would be only a potential, not an actual element of the commodity-supply. To him the commodity as such is as much a depository of exchange-value as ever and as such can act only by and after stripping off its commodity-form and assuming the money-form.