The most expensive part in this assembly is the Harness,wire.
The component with the lowest price in the WIRE HARNESS - IGNITION COIL schematic is the Nut,flange,6mm.
Parts such as the Wire Harness - Ignition Coil: Bolt,flange,8x20, Bolt,flange,6x70, Clip,thro Cable, Band,wire are included in the Cx500c Custom 1981 (b) France Wire Harness - Ignition Coil parts fiche.