In order to sell any product requires the availability of two important things (quality and price) If the product is of high quality, it will be easier to convince the client either if the product is poor in quality, this requires the availability of the second condition is the price must be the price of the product is poor quality than the product highQuality and I will convince the client from this way that the lower price of this product will make him win more than the purchase of a high quality product at a higher price and reduce the price to suit the quality of the product and be profitable for the client