THE great mass of consumers are always anxious to know the price of a commodity. To them it is the most essential consideration in a purchase. The thoughtless rich care little about the price, and those who don't intend to pay, care still less about it. The most knowing of this latter class, indeed, often deceive the vigilance of honest tradesmen by affecting a peculiar earnestness about cheapness. It is quite true that many well-known articles in great demand have a certain market price, and some a certain fixed price; as for instance, a penny roll. In this latter case the judgment of the purchaser is directed to its size, or its goodness, or to both those qualities together.