When any customer purchased the goods in large quantity from the market like in wholesaler, retailer, consumers then give discount to his customer. So for this purpose maintain multiple price level. In price list: suppose when customer purchased only 1 television Rs. 15000 per piece and when he purchased the goods in large quantity like 15 television Rs.14000. so, when customer purchased the goods in large quantity then give discount RS. 1000 per piece.