Contrary to what some people believe, agents do not select prices for sellers or buyers. However, an agent will help to guide clients to make the right choices for themselves. If a listing is at 7%, for example, an agent has a 7% vested interest in the sale, but the client has a 93% interest. Selling agents will ask buyers to weigh all the data supplied to them and to choose a price. Then based on market supply, demand and the conditions, the agent will devise a negotiation strategy.