The Screw,tap 5x12mm is the lowest priced item on this Wire Harness schematic.
Parts such as the Wire Harness: Horn Comp, Pgm-fi Unit, Collar, Washer, Handle are included in the Cb600f3 2009 (9) Australia / St Wire Harness parts fiche.
Of all the components used in this assembly the Harness,wire is the most expensive.