The Washer(10.5x22x2.3) is the lowest priced item on this Rear Wheel (sv650k8/sk8/k9/sk9) schematic.
Of all the components used in this assembly the Wheel,rr(17m/cxmt4.50) is the most expensive.
Check out any of the twenty-nine Rear Wheel (sv650k8/sk8/k9/sk9) components enlisted.