Competing producers of coats cause the supply of those of the second grade to be so large that they could not all be sold unless the second utility were offered for fourteen dollars. This makes the price of the entire coat twenty dollars as the result of catering in a detailed way to the demand of two different classes of buyers. In exactly the same way the price of the third grade is fixed at forty dollars and that of the still higher grade at seventy-five. In the third grade there is a utility which it costs twenty dollars to add to those possessed by garments of the second grade, and this is added to enough of them to supply all persons who will pay twenty dollars or more for it. These coats are made of more highly finished goods and have better linings, and this gives them the third utility which the market appraises at its cost, which is twenty dollars. The men who buy the forty dollar coats get a surplus of benefit in securing the first two of the utilities that are embodied in them, since for these they pay less than they would pay if they had to; but they get no surplus over the cost of the third utility. It is to secure their custom that the vender must sell it for twenty dollars. In a like manner a coat of the next grade, which is a more fashionable garment, sells for seventy-five dollars because it has a fourth utility which costs another sum of thirty-five dollars and, to the marginal buyers, is worth that amount. These men get a surplus from buying the first three utilities at what they cost their producers and what they are worth to poorer purchasers. It appears, then, that a seventy-five dollar coat is a bundle of distinct elements, or utilities, each of which has its separate cost and is sold at that cost price to a particular marginal class of purchasers. Each element is valued exactly as if it were in itself a complete article tied in this case to others, but also offered separately in the market. Persons of one class are final purchasers of the first utility when it is offered at its cost, six dollars. Another class, in a like manner, helps to set the price of the second utility at fourteen, and still other classes figure in the adjustment of the prices of the third and fourth utilities. These cost the manufacturers twenty dollars and thirty-five dollars respectively, and competition insures the making of enough of them to catch the patronage of those who will pay just these amounts. Members of one class act as marginal purchasers in price making in the case of one utility only. The concurrent action of all of them results in setting the price of the best coat at eighty dollars. It is a very practical fact that the rates at which all fine articles sell in the market are fixed in this way. Such articles contain utilities unlike each other. They have power to render services of varying degrees of importance, and each of the several services gets its normal valuation when