BEC口语素材：Commission 佣金

Commission means the amount of money related to the value of goods sold and paid to buyers, agents, intermediaries, salesmen or any others who offer services. It is a common way to reward sales people. Payments are calculated on the basis of a percentage of the goods sold. 

Commission has a close relations with the agency, which is a legally created leadership between the principal and agent. There are general agents, sole agents and commission agents. Commission agents are those who buy and sell in their own names on the best terms available on behalf of foreign buyers and sellers.