Well this thread is making me feel better about how much time I waste on forums...
But back to the useful side of the topic.
3D printing is an excellent hobby, but it is a hobby and a bit of an art in and of itself. Things like inserts, handy doodads, and basic replacement parts are a good use of 3D printing, but it does tend to be a bit more involved than just 'unbox printer, print thing from internet, resume photography that afternoon' - Consumer models are slow, frequently unreliable till you get stuff sorted, and can take a lot of fine tuning and some redesign of parts to get something that prints cleanly on your personal rig.
Strongly suggest anyone considering spend the time to watch a good amount of content on YouTube and such before diving into it. It isn't a laminator or paper shredder you buy to stick in a closet and pull out once or twice a year when you find something you need it for.
The skill of designing is also a bit of an investment if you want to customize or anything all that complex.
All that said, Mod54 is a great addition to a kit if you're already invested in the Paterson tanks for it, even if you're paying a surcharge for shipping. It isn't like you need dozens of the things. They're easier to dry after using for one batch of film and loading up another without any real issue. Far fewer small gaps for water to cling to, and even if a few drops are left hanging around they're far less of an impact than trying to ratchet on a long reel of film.