Loyalty discounts lie at the heart of the debate on single firm conduct, probably the most controversial issue in contemporary antitrust practice. Under particular conditions, loyalty discounts may have an exclusionary effect. However, they constitute a classical form of price competition, an...

Consider a monopolist in one market that faces competition in a second market. Bundled loyalty discounts, in which customers receive a price break on the monopoly good in exchange for making all purchases from the monopolist, have ambiguous welfare effects. To analyze such discounts as predatory...

In Katsoulacos et al. (2015) we examined the welfare properties of a number of monetary penalty regimes for tackling cartels, including revenue-based penalties, the most widely used regime. We showed that for a typical industry overcharge-based penalties welfare-dominate the others. However...