Amazon is peddling the MakerBot Replicator 2, Afinia 3D Printer H-Series, 3D Systems' Cubify (not available), fabbster 3D Printer, Airwolf3D, and a couple of Chinese models as well as well as filament—both ABS and PLA varieties. You can also pick up books, CAD software, and other assorted parts there too.
It's just one small step to bigger 3d printer adoption; this doesn't make them any cheaper. But it's never been easier to pick one up if you're in the market. More here.