"There is hardly anything in the world that some man cannot make a little worse and sell a little cheaper, and the people who consider only price are this man's lawful prey. It is unwise to pay too much, but it is worse to pay too little. When you pay too much, you lose a little money, that is all. When you pay too little, you sometimes lose everything, because the thing you bought is incapable of doing the thing it was bought to do. The common law of business balance prohibits paying a little and getting a lot ... it cannot be done."