The lowest price component in this Transmission parts-list fiche is the Circlip-type-c,20mm.
Some items from this specific schematic: Bolt,torx,6x30, Gear,input Rev,11t, Snap Ring,25.9x1.2t, Gear,output 5th,22t.
This Shaft-transmission In is the most expensive of the items that make up this Transmission assembly.