A sample from the products for the Grip Heater Custom's include: Heater R Grip, Grip Heater Sw, Grip Heater Kit, Bracket Sw.
The sub assemblies and components that make up this Grip Heater Custom's include this Grip Heater Kit, the most expensive part.
The lowest price component in this Grip Heater Custom's parts-list fiche is the Bracket Sw.