Of all the components used in this assembly the Taillight Unit is the most expensive.
Parts such as the Taillight: Bulb, Tail Light, Washer, Plate 8221447500, Lens Taillight, Nut, S/l Flange are included in the Xt660r 2007 3s63 Denmark 1f3s6-300s1 Taillight parts fiche.
The most reasonably priced component used on the Xt660r 2007 3s63 Denmark 1f3s6-300s1 Taillight is the Bulb, Tail Light.