Standard economics provides a well-understood framework of the competitive determinants of market prices that is now widely accepted for antitrust analysis. In “two-sidedmarkets,” where firms supply products demanded by two interrelated groups of consumers, these competitive forces operate...

This paper is a brief analysis of the proposed class settlement in In re Interchange Fee and Merchant Discount Antitrust Litigation, MDL 1720 (E.D.N.Y.). The analysis concludes that the relief plaintiff class members would obtain from the proposed settlement is largely illusory. The settlement...

The paper presents a model of a payment card association which provides payment cards as well as ATM services. Consumers are able to substitute cards by cash and regard cash as an inferior substitute for a debit card. I analyze the role of some widely accepted interchange agreements, such as the...

I show that an introduction of a liability on firms, proportional to the difference between consumers' beliefs and the effective terms of purchase/contract, can improve both social welfare and consumer surplus, depending on the relative magnitudes of: 1) decrease in the gap between the beliefs...