The component with the lowest price in the TRANSMISSION schematic is the Washer, Plate(59w).
Some items from this specific schematic: Gear, 3rd Wheel, Gear, 2nd Pinion, Washer,gear Holder 3(1.0), Circlip (256).
thirty-eight components are shown in this Xs650s Heritage Special 1983 (d) Usa Transmission exploded diagram.