Of all the components used in this assembly the Cylinder is the most expensive.
Parts such as the Cylinder: Cylinder, Stud Bolt (l:150), Nut 6mm, Pin are included in the Gsxr750r 1989 (k) (e01 E02 E04 E22) Cylinder parts fiche.
The component with the lowest price in the CYLINDER schematic is the Stud Bolt L:20.
