In nonlinear pricing environment with correlated types, we characterize optimal selling mechanisms when buyers could form a coalition to coordinate their reports and to arbitrage on the goods. We find that when the types of agents are weakly positively correlated, the optimal weakly...

This paper considers the screening problem faced by a monopolist of a network good in a general setting. We demonstrate that the joint presence of asymmetric information and network externalities revise the "no distortion on the top" and "one-way distortion" principle. The pattern of consumption...

This paper considers an entry-deterring nonlinear pricing problem faced by an incumbent firm of a network good. The analysis recognizes that the installed user base/network of incumbent monopolist has preemptive power in deterring entry if the entrant’s good is incompatible with the...

This paper studies the cost requirement for two-agent collusion-proof mechanism design. Unlike the existing results for general environments with three or more agents, it is shown that collusive behavior cannot be prevented freely in two-agent nonlinear pricing environments with correlated...