Welcome to the community @Lymestoney!
To my knowledge it's only available thru the clusterheadache dot com store I'm afraid!
If you happen to have plans to attend our 2nd annual clusterbusters European patient conference in Glasgow in May you might be able to purchase one there!! I know that we did send a few to last years inaugural event.
After having used one for 15 years I can tell you if I were to lose mine I would gladly pay $75 to replace it! They are just that good!!
Dallas Denny