Recommended readings (Machine generated): Michael R. Baye and John Morgan (2001), 'Information Gatekeepers on the Internet and the Competitiveness of Homogeneous Product Markets', American Economic Review, 91 (3), June, 454-74 -- Jean-Charles Rochet and Jean Tirole (2003), 'Platform Competition...

Price dispersion - firms charging different prices for the same product - is widely observed in both online and traditional offline markets. While most price dispersion is explained by stylized clearinghouse models such as Varian (1980), these models do not explain why prices in offline markets...

I. Preliminaries -- One: Introduction, -- Two: Mathematical Preliminaries -- II. Consumer Behavior -- Three: Consumer Behavior in the Absence of an Income Tax -- Four: Consumer Behavior in the Presence of an Income Tax -- III. Economic Indices in the Absence of Taxation -- Five: The Konus and...