The sub assemblies and components that make up this F-21 include this Case Comp.,air/c, the most expensive part.
The component with the lowest price in the F-21 schematic is the Screw,pan,5x13.
A sample from the products for the F-21 include: Tube (pink 3), Bolt,flange,6x20, Tank,storage, Tube,3.5x235 (pin.