J-010 Joystick
http://www.matrixsynth.com/2013/09/ladik-j-010-joystick-module-for-eurorack.html?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+Matrixsynth+%28MATRIXSYNTH+Atom%29
No info about availability.
How much is the fish?