The Bolt-wash.,6x16 is the lowest priced item on this Inner Panel schematic.
The sub assemblies and components that make up this Inner Panel include this Panel, Rr. Tray, the most expensive part.
Some items from this specific schematic: Rail, R. Roof Side, Support, L. Rr. Tray, Extension,r.rr.wh, Rail, L. Roof Side.