Locally, I typically shop at Fire Nation. They have a glass blowing shop in the back, a nice gallery in the front, and a separate space with supplies. The suppliers I tend to use online include Sundance Glass, Delphi Glass, and Frantz Art Glass. There are many MANY others but I haven't had the chance to order from them yet.
That's just for the raw glass and things like enamels, frit, tools, etc. Then there's all the jewelry making supplies. That's a blog post for another time.
So off I go to the "candy store", because that's what it is - eye candy!