As others have said, home-printing will give you something with a dodgy quality of figures; think back in the 70s or 80s. If you want pretty prints you pay for someone else to do them, and pay through the nose.
I don’t know when home-printing will take off. I guess it depends on what other industries or services latch on to the idea that people can make certain items themselves thus driving a market for the printers. I have one, but its used almost exclusively for wargames stuff.
If you want to do a comparison, here’s a link to pictures of my 28mm Dwarf army for ‘Hordes of the Things’. Half of it is made up of Mantic plastic figures. The other half is made up of items downloaded from Thingiverse and printed on my cheap home-printer.
The Stronghold Rebuilt: http://hordesofthethings.blogspot.com.au/