Coupons can be an effective way to induce trial. They can introduce a new product, maintain/ increase market share, attract first-time users and increase brand awareness and switching. A recent study showed that key grocery shoppers in larger, middle-income households are more likely to use coupons.
However, there are some serious drawbacks to the practice of couponing. First, coupons decrease top-line revenue by decreasing the amount of money collected by a business through some sort of discount.
Third, couponing can condition patrons to purchase goods or services only when they have a coupon. A study of pricing and sales performance was conducted on matched sets of stores for five new products. One set of stores introduced the five products at a 20 to 30 percent discounted rate for an introductory period. The other set introduced the same products at regular price. Long-term volume was higher across the board for those products that were introduced at regular price.
Fourth, coupon redemption rates are traditionally low. According to a 2004 article published in the Washington Post, only one to two percent of coupons are redeemed.
Prior to implementing a coupon campaign, you should familiarize yourself with your target customers and their psychographic profile. Coupons tend to be most used by consumers that can be categorized as shrewd shoppers (those shoppers influenced by face value of a the coupon and less likely to try a new product) and compulsive coupon users (those shoppers who stock up on coupons). Coupons are used moderately by persuadable purchasers (those shoppers who enjoy a bargain and are likely to buy after receiving a sample).
 Source: http://www.santella.com/coupon.html
 Source: http://www.allbusiness.com/periodicals/article/504143-1.htm
 See Hall, D. & Stamp, J. (2003), Meaningful Marketing, Brain Brew Books. Cincinnati, Ohio p. 91.
 Ibid., p. 204.
 Pressler, M.W. â€œUse of coupons cuts both ways.â€ Washington Post. September 12, 2004. P. F01.