The most reasonably priced component used on the Z50j Monkey 2007 (7) Japan Ab27-180 E-7 is the Screw,flat,5x10.
Some items from this specific schematic: Washer B,lock, Washer,lock 14mm, Guide,cluh.center, Plate C, Clutch.
The most expensive part in this assembly is the Gear,prim.driven.