The most reasonably priced component used on the 115 Etk 1985 Carburetor is the Screw, Bind (33v).
Parts such as the Carburetor: Valve Seat Assy, Ring, O, Spring,drain Valve, Gasket, Float Chamber are included in the 115 Etk 1985 Carburetor parts fiche.
The most expensive part in this assembly is the Carburetor Assy.