Looking for a good place to request 3d printing services for sale

As title says, I have very limited space and as such want to be able to get some affordable plastic for Warhammer 40K without having to invest into optimizing a 3D printing setup. I read through the frequently asked questions but didn't see a section about good services to have other people print what you need at a price. Is it because this is illegal? Or otherwise, are there other recommendations for where one might find something like this