Thomann do ship to US but its a flat rate minimum shipping of about 30 euros, so need to buy a bit to make it worthwhile.
That said, I believe it is available from US distributors, and you can use any of the hazer fluid from Look, Smoke Factory or HazeBase as its all the same stuff.
Pangolin sell the Tour Hazers so might be worth contacting them for prices on fluids.
I tend to buy the 10L Look fluid from Thomann as it's most cost effective for my Smoke Factory and HazeBase machines