The Washer(6.5x20x1.2) is the lowest priced item on this Headlamp Housing schematic.
A sample from the products for the Headlamp Housing include: Cover,headlamp Hsg, Screw(5x16), Spacer(6.5x9x10), Plate,headlamp Housing.
Of all the components used in this assembly the Housing,headlamp is the most expensive.