Some items from this specific schematic: Hose,rr.brake, Bolt,flange,6x12, Body,m/c.rear, Washer,screw 4x12.
Of all the components that make up this Rear Brake Master Cylinder the Washer,screw 4x12 has the lowest price.
Of all the components used in this assembly the Cylinder Assy.,rr is the most expensive.