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Advertising And Collusion In Retail Markets, Kyle Bagwell, Gea Myoung Lee
Advertising And Collusion In Retail Markets, Kyle Bagwell, Gea Myoung Lee
Research Collection School Of Economics
We consider non-price advertising by retail firms that are privately informed as to their respective production costs. We first analyze a static model. We construct an advertising equilibrium, in which informed consumers use an advertising search rule whereby they buy from the highest-advertising firm. Consumers are rational in using the advertising search rule, since the lowest-cost firm advertises the most and also selects the lowest price. Even though the advertising equilibrium facilitates productive efficiency, we establish conditions under which firms enjoy higher expected profit when advertising is banned. Consumer welfare falls in this case, however. We next analyze a dynamic …