In this paper, we tackle the dilemma of pruning versus proliferation in a vertically differentiated oligopoly under the assumption that some firms collude and control both the range of variants for sale and their corresponding prices, likewise a multiproduct firm. We analyse whether pruning...

We consider a joint assortment, inventory, and pricing problem of a retailer selling multiple vertically differentiated products of a single category. Consumers are heterogeneous in their willingness to pay for product quality. But the retailer only knows the distribution of consumer...