The nature of computer networks and the manner in which network services are provided are changing dramatically. Network architectures that employ virtual mobile agents to provide services are under development. We describe Price Propagation, which is based on pricing in market economies. It is a decentralized adaptive mechanism for regulating agent behavior, with the goal of allocating computational resources optimally. Categories and Subject Descriptors C.2.1 [Computer-Communication Networks]: Network Architecture and Design – Distributed networks, Network communications, Wireless communication. C.2.1 [Artificial Intelligence]: Distributed Artificial Intelligence – Intelligent agents, Multiagent systems. General Terms Algorithms, Economics Keywords Multiagent systems, computer networking, artificial life