If you have the setup it’s pennies on the dollah
https://makerworld.com/en/models/172032#profileId-188865 
I've avoided getting into 3D printing, mainly because of startup cost. Cheap printers take more work and time to get decent results, and the better printers are not cheap. Prices have come down, but I know how i am, Good enough is never good enough!
I've purchased printed items for woodworking, like a dust collection hood for the miter saw. I was impressed by the quality, but that guy uses a print farm with high-end printers and filament.
I also bought a replacement cog wheel for a pencil sharpener for $8. A new sharpener would have been $80+ for the a comparable replacement sharpener, and a factory replacement part is not available anywhere.
There are people who will print what you need for a fee. Just send the files, specs and whatnot, and they will charge whatever they think is reasonable.
I've encountered many situations where printing a part would be so much easier and cheaper to do than trying to find and buy the part, but as you said, you need the setup.