Agree, it's a trick part to make so I can understand how they cost so much, converted to AUD$ though will be $500 which I'm struggling with! I have a sample of an aluminium 3D print coming next week, fingers crossed!
As expensive as these are, try buying parts for a Merc Pagoda W113! Your eyes will water (e.g. fuel pump, various solenoids and relays, heater controls, etc.)!