The component with the lowest price in the E-13 schematic is the Washer,spl 12mm.
This schematic depicts all components used in the Z50j Monkey 2009 (9) Japan Ab27-190 E-13 partslist.
Some items from this specific schematic: Gear,m.top, Bolt, Sprocket, Gear,mainshaft Se, B/brg Rad N/com.