GRACE is exploring the development of a generic framework/infrastructure for grid computational economy that co-exist with popularly Grid systems such as Globus and Legion for creating an Economy Grid. The key components of GRACE infrastructure include: Grid Resource Broker (e.g., Nimrod/G), Grid Resource and Market Information Server (provided by Globus MDS and extended services for resource access price), Grid Open Trading Protocols and API Trade Manager (part of broker involved in establing service price), Grid Trade Server (works for Grid Service Providers) They work closely with grid middleware and fabrics.