competing products, the price of individual products tends to fall over the product lifetime. This holds true for more than 90 …% of the expenditure items underlying the U.K. consumer price index and has important normative implications. Constructing … a sticky price model featuring a product life cycle and rich amounts of heterogeneity, we explain how the optimal in …

competing products, the price of individual products tends to fall over the product lifetime. This holds true for more than 90 …% of the expenditure items underlying the U.K. consumer price index and has important normative implications. Constructing … a sticky price model featuring a product life cycle and rich amounts of heterogeneity, we explain how the optimal …