The most reasonably priced component used on the Vl800 Boulevard C50 2007 (k7) Usa California (e03 E33) Magneto is the Clamp,generator Lead Wire.
A sample from the products for the Magneto include: Washer(14x29x4), Bolt, Rotor Assy, Bolt.
Of all the components used in this assembly the Rotor Assy is the most expensive.