The Washer,plain,8mm is the cheapest item from this partsfiche.
The Rear Brake Caliper (cbr1000fh/fj/fm) assembly is constructed from several parts from which the Caliper Assy,rr is the most expensive.
Some items from this specific schematic: Sleeve, Caliper Comp.,rr., Plate, Bolt,flange 8x49.