What is personal selling? What are the advantages and disadvantages of a firm using personal selling to promote a product or service?

What will be an ideal response?

Personal selling is the most effective tool at certain stages of the buying process, particularly in building up buyers' preferences, convictions, and actions. It involves personal interaction between two or more people, so each person can observe the other's needs and characteristics and make quick adjustments. Personal selling also allows all kinds of customer relationships to spring up, ranging from matter-of-fact selling relationships to personal friendships. An effective salesperson keeps the customer's interests at heart to build a long-term relationship by solving a customer's problems. Finally, with personal selling, the buyer usually feels a greater need to listen and respond, even if the response is a polite "No thank-you."
These unique qualities come at a cost, however. A sales force requires a longer-term commitment than does advertising—although advertising can be turned up or down, the size of a sales force is harder to change. Personal selling is also the company's most expensive promotion tool, costing companies on average $600 or more per sales call, depending on the industry.