The Taillight assembly is constructed from several parts from which the Unit,tail Light is the most expensive.
Parts such as the Taillight: Screw,tapping,(po)4x, Packing,lens, Bulb (12v5w), Screw-washer 4x16 are included in the Cb1300 Super Four 2008 (8) Australia Taillight parts fiche.
The lowest price component in this Taillight parts-list fiche is the Screw-washer 4x16.