The most expensive part in this assembly is the Battery Assembly (12v) Ftx.
Parts such as the Battery: Cap,starter Motor Lead, Protector(170x95x3.0), Cap,battery Plus, Protector(170x95x3.0) are included in the Vl800 Boulevard C50 2009 (k9) Usa California (e03 E33) Battery parts fiche.
The most reasonably priced component used on the Vl800 Boulevard C50 2009 (k9) Usa California (e03 E33) Battery is the Protector(50x50x5).