Arbitrage is a technique often used in many busy marketplaces. The stock market and commodities market, for example, are filled with people (referred to as arbitrageurs) who practice arbitrage as a way of earning a living. In arbitrage, you seek a commodity or service that is in high demand in one marketplace but is available for a lower price in a different marketplace. You acquire the item cheaply where you can and immediately sell it for a higher price in the more competitive marketplace. In fact, if you are sure of your supply for the commodity, you can take the chance of selling the product... [...]