There is no reason you couldn't 3D print fairly good quality ships yourself IF you have the model to print from, I bought an Anete A8 just before christmas and from knowing nothing at all I have managed to print this thing already.~
It prints in parts and assembles to just over a foot long, it's not glued or painted here obviously.
There's about 40 hours of printing time on my particular printer at this scale and quality setting so you're not going to be printing things for commercial gain but for your own use it's fine.
Getting the assets and preparing them to print is the hard part, the printing is simple in comparison and the materials are cheap, I used a tiny percentage of a £20 roll of PLA.
This is where i got my printer from,
http://www.gearbest.com/3d-printers-3d-printer-kits/pp_337314.html
and this is the Gowanus Monster for in case your interested.
http://www.thingiverse.com/thing:854906
It prints in parts and assembles to just over a foot long, it's not glued or painted here obviously.
There's about 40 hours of printing time on my particular printer at this scale and quality setting so you're not going to be printing things for commercial gain but for your own use it's fine.

Getting the assets and preparing them to print is the hard part, the printing is simple in comparison and the materials are cheap, I used a tiny percentage of a £20 roll of PLA.
This is where i got my printer from,
http://www.gearbest.com/3d-printers-3d-printer-kits/pp_337314.html
and this is the Gowanus Monster for in case your interested.
http://www.thingiverse.com/thing:854906