Of all the components used in this assembly the Pump Assy,oil is the most expensive.
Parts such as the Oil Filter/oil Pump: Dowel,pin,8x14, Vlv Assy,relief, O-ring,14.8x2.4, Pump Assy,oil are included in the Vt1100c2 Shadow 1995 (s) Germany / 25k Oil Filter/oil Pump parts fiche.
The component with the lowest price in the OIL FILTER/OIL PUMP schematic is the Bolt,flange 6x30.