Of all the components used in this assembly the Lens,taillight is the most expensive.
Some items from this specific schematic: Screw Cross 4x50, Bulb,stop & Tail 6v 21/5w, Bolt,hex,5x20, Packing Lens.
With all the components that make up the ST70K3 DAX ENGLAND TAILLIGHT (ST70-E) assembly. The Lock,washer Tank is the most frequently specified with four applications.