This Wheel-assy,rr,l.green is the most expensive of the items that make up this Rear Wheel/chain assembly.
Some items from this specific schematic: Bearing-ball,#6006g, Pin-cotter,4.0x40, Bearing-ball, Circlip.
The component with the lowest price in the REAR WHEEL/CHAIN schematic is the Pin-cotter,4.0x40.