Of all the components used in this assembly the Caliper Assy, Rear is the most expensive.
Parts such as the Rear Caliper (sv650k8/sk8/k9/sk9): Spring,pad, Insulator, Boot,sleeve, Caliper Assy, Rear are included in the Sv650a 2009 (k9) Usa (e03) Rear Caliper (sv650k8/sk8/k9/sk9) parts fiche.
The Boot is the cheapest item from this partsfiche.