The component with the lowest price in the F-5-1 schematic is the Screw,4x12.
Some items from this specific schematic: Grille,fr. *nh-1*, Outlet,l.*nh154r*, Nut,sus M5, Nut,speed,3mm.
The sub assemblies and components that make up this F-5-1 include this Cov,fr N*nh-198p*, the most expensive part.