The Screw,oval,4x12 is the cheapest item from this partsfiche.
Parts such as the Winker: Base,winker L., Socket Comp.l Rr., Bulb 12v21w, Lens Comp.,winker are included in the Ns400r 1985 (f) Austria Winker parts fiche.
Of all the components used in this assembly the Winker Assy R Rr is the most expensive.