The base model prints with PLA (Poly Lactic Acid) biodegradable plastic, the same material that the MakerBot Replicator 2 uses. PLA has a reputation as the easiest 3D printing material to work, hence the best material for the novice to learn with. The base model is $520. An upgraded version for an additional $99 will also print in ABS, which is much tougher and stronger than PLA. The print volume is 10"x10"x8" (800cu. in.), nearly twice the volume of the Replicator 2.
At this low price point, a quarter of the cost of the Replicator 2, the RoBo 3D promises to bring 3D printing home to many more of us. Check out the Kickstarter page here for more info... there is still time to subscribe.
Update: The RoBo3D is now fully funded with 1,251 backers committing just under $650K!