The most reasonably priced component used on the Gl1000 Goldwing 1978 Usa Ignition Coil is the Screw,pan,5x20.
Some items from this specific schematic: Suspension,winker, Signal Stat, Resistor Comp., Bolt.flange 6x12.
The Ignition Coil assembly is constructed from several parts from which the Coil, Ignition is the most expensive.