The component with the lowest price in the TAILLIGHT (KM100-A6/A7) schematic is the Washer-plain,6mm.
The most expensive part in this assembly is the Tail Lamp.
A sample from the products for the Taillight (km100-a6/a7) include: Screw,pan Head,4x40, Nut,6mm, Tail Lamp, Washer-plain,6mm.