Ans:
Personal selling involves face-to-face interaction between the executive and the customer and provides great attention to the customers. This suffers from a very high cost as sales personnel are expensive. On the other hand, non-personal sales include advertisement and publicity. Being non-personal, there is no personal interaction. The customers know about the product from ads on T.V. display boards, pamphlets, newspapers, etc. These modes are not very expensive for a company's marketing.