I think think it is overpriced for what seems like will be the future of interfacing.

In time, we will all be using touch screen interfaces for all our computing and music creating needs.
The Lemur and Jazz Mutant are for those who want to jump on sooner, but it will cost you.
I think a couple of years from now, it will be much more reasonably priced, and more integrated into all our computing environments.

Look at i-phone, the new macbook air, etc. These technologies are to warm us up to a new way off interacting with digital mediums. The mouse and keyboard will be ancient relics soon enough...