Of all the components used in this assembly the Drum,gearshift is the most expensive.
Some items from this specific schematic: Washer,12m/m, Arm,gearshift, Drum,gearshift, Spring, Shift.
The most reasonably priced component used on the Cx500c Custom 1981 (b) European Direct Sales Shift Drum - Shift Fork is the Roller 6x13.