In markets where product quality is important, more than one characteristic is usually necessary to de fine product quality. Standard models maintain that: (i) in a duopoly there will be a quality leader no matter whether the product can incorporate one or two vertical attributes; (ii)...

We study price personalization in a two period duopoly with vertically differentiated products. In the second period a firm knows the purchase history of all customers, as in the standard Behavior Based Price Discrimination models. However in the second period it also has detailed personal...