^ yeah, they do. As it happens I already have the HBE website opened (was suggesting them to someone on another forum, lol), I'll see if I can find the dealer locator.
http://homebrewelectronics.com/dealers.htm (scroll down to the bottom there and it gives you the international distributors.
FWIW, I think I've come to the conclusion that I prefer clean boosters to boost an already overdriven tone... something like an uno or dos mos. Though, it has to be said, it's debatable if that'd give you enough for metal, unless your "already overdriven" tone is almost metal already...
also, I guess it depends if you're boosting to get your rhythm tone or a lead tone... as that'll affect (probably) what type of tone you're trying to achieve.