The component with the lowest price in the OIL PUMP schematic is the Pin.
The Oil Pump is made up of components including this Pump Assy,oil which is the most expensive.
This part-list fiche shows all the components that make up the Gsx1100f 1994 (r) (e02 E04 E15 E17 E18 E21 E22 E25 E34 E53) Oil Pump .