The lowest price component in this Throttle Body parts-list fiche is the Nut,flange,6mm.
Some items from this specific schematic: Nut,flange,6mm, Stay Comp,hose Cl, Bolt,flange,sh,6x16, Hose Comp,fuel Fe.
The Throttle Body assembly is constructed from several parts from which the Throttle Body,ass is the most expensive.