This Rear Swinging Arm is the most expensive of the items that make up this 28a Swing Arm [mod:xdiavels] assembly.
The component with the lowest price in the 28A SWING ARM [MOD:XDIAVELS] schematic is the Nut M8.
Some items from this specific schematic: Screw, Special, Hose Clamp 8 Mm, Cap, Swingarm Cover, Nut M8.