The Front Hub is made up of components including this Drum-assy,front Brake which is the most expensive.
Some items from this specific schematic: Pin-cotter,2.5x20, Bearing-ball,tmb201ll, Bearing-ball,#6301uuc, Axle,rr.
The Pin-cotter,2.5x20 is the lowest priced item on this Front Hub schematic.