The Camshaft/valve is made up of components including this Cam Shaft Comp,in which is the most expensive.
The lowest price component in this Camshaft/valve parts-list fiche is the Cotter,valve.
Some items from this specific schematic: Shim,tappet (1.20, Shim,tappet (2.42, Shim,tappet (1.90, Shim,tappet (2.02.