Price in economics and business 's the result of an exchange and from that trade we assign a numerical monetary value to a good, service or asset. If Alice trades Bob 4 apples for an orange, the price of an orange's 4 apples. Inversely, the price of an apple's 1/4 oranges. Price's only part of the information we get from observing an exchange. The other part's the volume of the goods traded per unit time, called the rate of purchase or sale. From this additional information we understand the ex… (More on Price)