We discuss potential market mechanisms for the GRID. A complete dynamical
model of a GRID market is defined with three types of agents. Providers,
middlemen and users exchange universal GRID computing units (GCUs) at varying
prices. Providers and middlemen have strategies aimed at maximizing profit
while users are 'satisficing' agents, and only change their behavior if the
service they receive is sufficiently poor or overpriced. Preliminary results
from a multi-agent numerical simulation of the market model shows that the
distribution of price changes has a power law tail.Comment: 4 pages, 3 figure