We develop a model of firm size, based on the hypothesis that consumers are "locked in" because of search costs, with firms they have patronized in the past. As a consequence, older firms have a larger clientele and are able to extract higher profits. The equilibrium of this model yields: (i) A...

A model of gradual reputation formation through a process of continuous investment in product quality is developed. We assume that the ability to produce high-quality products requires continuous investment and that as a consequence of informational frictions, such as search costs, information...

This paper shows that prices may be sticky when buyers must search to determine the current market price and there is uncertainty about the expected duration of cost changes. Specifically, during periods when costs, and hence prices are high, low valuation consumers optimally stop searching and...