Coupons are also known as vouchers. In coupons, a person gets some discount for certain products. What is the benefit of coupons for a consumer? A consumer can purchase some more products because of these coupons. What is the disadvantage of coupons? A consumer spends savings more than he actually calculated just to get a coupon and end up at loss. What advantages a firm receives by selling coupons? A firm can get more profit by selling coupons because in this way, it is at receiving end. What kind of disadvantages a firm receives? A firm is not at loss as a consumer is. It is basically a firm strategy to sell coupons to earn profit. I hope this presentation will help you to understand the topic clearly.