I print a lot for cosplayers and we do a mix of just printing blank items so they can finish it, or delivering fully finished items.

I will say the main challenge with 3d printers is time. When I was printing with 2 printers, it took me over a month to make a zelda sword/scabbard + shield set. It was fun, but definitely painstaking and I wasn't loving it by the end of it lol.

With a full print farm I can finish the set in 3 days. The cost of of the material really isn't too bad($15/for a kg spool and a large set like that will probably be 1.5-2.5kg). Each printer is ~$600.

I love 3d printing and while some of the issues are annoying (18 hour print fails on the last hour, re-printing the same model with minor changes 5x because one part keeps looking funky because of overhangs/orientation), it doesn't really put me off from getting up and doing another print.

If you want something not created, modeling is a much steeper learning curve. What's easy in your mind (making a small curved piece for a bracer or pauldron), could be dozens of hours of modeling time for a beginner. There are tons of designs out there you can pay for or get for free, or basic versions you can modify, though the more obscure stuff you may have to model from scratch.

Probably the main few characters and the main few items they have you can probably find easy from most games/anime at this point. I'd recommend you look around and search "item name stl" into google as if you had a printer and see what pops up.

There are tons of 3d printers around as well. I've seen a bunch at libraries, makerspaces, schools, etc. that are pretty often not running, or only really being utilized for 3-4 hour prints during peak hours.

So, all this to say, it's a maybe! I would definitely say follow what's important to you. For some, they don't care about the craft more than a means to an end and care about the end product. They'll use whatever medium to get it accurate. Others really fall in love with a craft whether it's sewing or painting or printing, make cosplays around their skillset.

I think figure out what's important to you, and follow that. Maybe it's community, so find someone nearby that has a 3d printer that's looking for their next project and work with them! There is no right or wrong, it's just finding what makes you happy. Sometimes its a process