Over the last year Peer-to-Peer (p2p) implementations have evolved from experimental to sophisticated systems. Mobile agents have a long e-Commerce history dating back to the middle 1990’s, and have not been generally accepted by the corporate, e-Commerce mainstream. This is because of a misfit with the client-server model. With the advent of p2p networks, sub-network, eco-system like communities, that are more suitable for mobile agent behavior, now exist. In this paper we will discuss the application of mobile agents to e-Commerce on Peer-to-Peer (P2P) networks, as well as an implementation on the Project JXTA, P2P platform. This implementation demonstrates both the suitability of mobile agents on p2p networks, and the ease of use of the Project JXTA protocols.