I've heard about it. They're mainly in the US which is quite unfair to us in the UK, why shouldn't we be able to get ahold of something that could improve treatment?
I'm suggesting it to my Dr about them next time I go, but the point is, they're expensive and I don't know if the fact that I'm 17 may help mean it'll be cheaper/free, like you do with meds/pescriptions when you're 16 or under/ in school, whatever applies. I remember getting the flutter and the nebuliser free when I was younger.