This paper surveys developments in analytical models and empirical findings concerning the strategic use of manufacturers' coupons for U.S. grocery products. Traditional theories examine the horizontal effects of coupons as a strategy to charge various classes of consumers different prices. Recent developments focus on the use of coupons in manufacturer-retailer vertical competition. The paper provides data on trends in couponing: numbers, face values, redemption rates, total promotional costs, and international usage. The paper further analyses the effective price discounts provided by coupons across brands and segments of ready-to-eat cereals during 1992-1995. |