I'm very interested in this hardware, but the price has been a deterrent for me as well. I would have ordered it already for $199. But for $449 + extra for the electrodes, etc., it's a pretty serious investment for a fairly unknown device.

My main interest in this tech is to be able to build a machine learning classifier for meditative states. Then when I have that classifier, I'd like to make a simple mobile app that lets people "record" and "measure" their meditation sessions.