MARGIN OF PROFIT • DICCIONARIO INGLES.COM • Definition of Margin of profit

... year, as it was planted seven years ago last February. It has never paid a dollar of profit. You won't find any literature on nut orcharding in the South that will convey any such impression as that. I do expect it to pay this fall a small margin of profit. I won't attempt to explain all that but will say that an orchard must be eight or ten years of age before you may expect or hope for a reasonable profit. After that it ought to pay well. It is well ...

— Northern Nut Growers Association Report of the Proceedings at the Fifth Annual Meeting - Evansville, Indiana, August 20 and 21, 1914 • Various

... incurred in order to buy the stock, with an increased burden of taxation because his township had also been gullible enough to buy stock, and with a railroad whose excessive rates allowed him but a narrow margin of profit on his produce. ...

— The Agrarian Crusade - A Chronicle of the Farmer in Politics • Solon J. Buck