Some items from this specific schematic: Spacer, Tail, Clamp, Lens, Taillight.
The lowest price component in this 023 Number Plate Holder - Tail Light parts-list fiche is the Clamp.
With a quantity of four pieces, the Nut, Flanged M6x1.00 is the most used part in the 023 NUMBER PLATE HOLDER - TAIL LIGHT diagram.