I have seen commissions range from 5% to 20% of the gross received by the client. Generally speaking, with my clients, I usually try to keep managers' commission in the 5%-10% range as they are there to assist the client in the management of their career, not act as an agent. This being the case, a client's agent will be doing a majority of the work for their 10% and there is not reason for the manager to take more than an agent if their service do not generate fees for the client as often as...