Amos 8:6

that we may buy the poor for silver and the needy for a pair of shoes, compelling him to sell himself either for a certain amount of money which he owed or for a pair of shoes which he had gotten and was unable to pay for; yea, and sell the refuse of the wheat? only the poor grain, for which they charged just as much as for the best grade. History repeats itself also in this respect, for the same tactics are used in our days by such as speculate in foodstuffs and in the necessaries of life, the manipulators always fixing the prices in their favor or else selling inferior goods for the price of that which is really high-grade.