A striking fact about pricing is the prevalence of \sales": large temporary price cuts followedby prices returning exactly to their former levels. This paper builds a macroeconomic modelwith a rationale for sales based on firms facing customers with different price sensitivities.Even if firms...

Recent literature on the design of optimal monetary policy has shown that deviations fromprice stability are small whenever prices are sticky. This paper reconsiders this issue byintroducing capital accumulation in the model. Optimal monetary policy in this setupimplies small deviations from...