Of all the components used in this assembly the Light Assy,head is the most expensive.
The most reasonably priced component used on the Vf1100s Sabre 1985 (f) Usa California Headlight is the Bolt,slotted 5x12.
Some items from this specific schematic: Cap,soc.bolt 10mm, Ring Head Light, Collar,hd/lt Case, Bolt,recessed,5x1.