The most expensive part in this assembly is the Relay Assy,turnsignal.
Parts such as the Turn Signal Lamp (re5m): Washer,lock, Nut, Washer, Bulb(12v23w,stanley,a4577a) are included in the Re5 Re5m Re5a 1975 1976 (m) (a) Usa (e03) / 497cc Rotary Turn Signal Lamp (re5m) parts fiche.
The Washer,lock is the cheapest item from this partsfiche.