Freight Broker Training Headquarters. One of the fastest growing professions in the transportation industry is the freight broker profession. A freight broker is an individual or business that works as a liaison between individual or company that needs an authorized motor carrier and shipping services. The start-up cost of freight brokerage business is easily affordable, when compared to other professions in the transportation industry. However, many people who want to work as a freight broker have doubts about the freight broker salaries, which they can expect in this business. To get an accurate estimation of freight broker salaries, you must understand the process of making money in the freight brokerage business. The process of making money in the freight brokerage business is pretty simple.