Some items from this specific schematic: Pin,pad, Insulator, Pad & Retainer Set, Boot.
The most reasonably priced component used on the Dl650 Vstrom 2007 (k7) Usa (e03) Rear Caliper (dl650ak7/ak8/ak9) is the Boot.
Of all the components used in this assembly the Caliper Assy,rr is the most expensive.