Stacking Coupons: Sometimes, you can use a manufacturer coupon along with a Walgreens store coupon. This means even more savings! Rewards Program : I always sign up for their Balance Rewards program.

Citations: Nevo, Aviv. 2002. Why Do Manufacturers Issue Coupons? An Empirical Analysis of Breakfast Cereals. RAND Journal of Economics. (2)319-339.

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Well, then here's a potential stumper for you: does Costco accept manufacturer's coupons? In a word: no. It might be tempting to try and stack savings by combining Costco's wholesale prices with ...

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