The component with the lowest price in the Gear Box schematic is the Bolt-flanged,6x14.
The Gear Box assembly is constructed from several parts from which the Case-gear,lh is the most expensive.
Parts such as the Gear Box: Bolt-flanged-small, Bolt-flanged,8x20, Collar,8.3x11.5x9, Holder-cable are included in the Kaf620-pbf Mule4000 2011 Usa Gear Box parts fiche.