It doesn’t look like these are for sale yet, but you can register you email on their mailing list to find out when you can get one.
Piccolo the tiny CNC-bot from diatom studio on Vimeo.
From the Piccolo.cc website: Piccolo is a pocket-sized stand-alone CNC platform. For under $70, you will be able to assemble your personal Arduino-compatible kit for tinkering, and playing with basic CNC output. Be it plotting a quick graffiti, printing a one-off business card on the fly, or multiple Piccolos working together to create a large mural, this kit provides a platform for experimenting with 2D or 3D digital fabrication at a small scale.
Would love to be informed on developments regarding this gizmo. Even I have $70 to burn.