The Circlip(1wg) is the lowest priced item on this Oil Pump schematic.
The Oil Pump is made up of components including this Oil Pump Assy which is the most expensive.
Parts such as the Oil Pump: Pin, Dowel(3vd), Pipe, Oil 1, Rotor Assy 2, O-ring (371) are included in the Wr250f 2001 5ph2 Finland 115ph-100e3 Oil Pump parts fiche.