I'm seeing ones on Amazon for $35 - $55. I searched for "soft roller".

I haven't had a chance to get into the book yet. Although I do the "Neck Decompress" that someone else posted about:
http://www.youtube.com/watch?v=v1Fu-m-MxKE

My rib pain that I mentioned has diminished since doing the inversion table which I've posted about elsewhere.