Some items from this specific schematic: Bolt Flange,6x14, Sash,r.rr.door Lo, Collar A Rr Door Pan, Nut,flange,6mm.
Of all the components used in this assembly the Reg Assy R Rr Dr is the most expensive.
The lowest price component in this Rear Door Windows parts-list fiche is the Nut,flange,6mm.