This workshop will address some of the issues that are arising in the context of Internet routers and protocols that are capable of offering users choice among differentiated services and explicit bandwidth allocations. It is anticipated that complementary user-network and network-network interfaces, together with scalable pricing and billing mechanisms, will likely be deployed, in particular to give users incentives to employ the lower-quality classes-of-service for applications that can tolerate them. There is debate as to whether feasible flat-rate pricing paradigms are sufficient or if usage-based pricing approaches are needed. Extensive work has been done already on pricing of communications networks, in particular using game-theoretic approaches and optimization theory. However, we still do not have real "network economics" that ties in pricing concepts together with control and incentives. The highly distributed nature of the Internet makes deployment of pricing and billing mechanism challenging. The goal of this workshop will be to develop a coherent overview of the joint work that has been done on the subjects of Internet economics, pricing, and network management, and to determine important new research directions.