yhea, maybe not THAT high, but have you been to illuzions lately? there are 10k+ pipes in there that actually turn over.... i've heard tell of some super high end denver glass going for 5 digits, which imo is pretty damn impressive for an artist to get that much for functional glass, bigups to them.
Haven't been to Illuzions but checked out some of their stuff online, they have a lot interesting stuff. functional art is the best kind if it can be pulled off effectively, more power to those getting higher prices or just making sales regularly.