Would you pre-order GridSpy power monitoring?
waivej: Cost for me... I really enjoy our TED (http://www.theenergydetective.com) which aims more at a residential market.  ($150 US)  The instant feedback has been great for learning.  The web interface isn't a big draw.I imagine that commercial markets would be better for your product...especially in classrooms or companies that want to show off how green they are.  (especially if it has really pretty graphics to embed into their website.)