Well, that might be possible with the Pirate3D Buccaneer
For less than \$350, the first affordable, easy to use 3D printer is to ship in december 2013.
A Kickstarter project, the Buccaneer is a nicely designed and compact 3D printer intended for the masses. It's supposed to be easy to use, supports cloud printing and many platforms (including mobile ones). Pirate3D is to offer a SDK soon and has a nice "Smart objects" mechanism to make it possible to quickly design your object before printing it.
A start-up to follow, I guess.