The Swing Arm - Rear Shocks assembly is constructed from several parts from which the Shock Absorber Assy, Rear is the most expensive.
Some items from this specific schematic: Rear Arm Comp, Bolt, Washer Based (4h7), Bolt, Flange, Nut, Flange(38w).
The component with the lowest price in the SWING ARM - REAR SHOCKS schematic is the Ybs67-8 Washer, Spring.