I live in the town where the Superlites are made (Adelaide, South Australia) and checked into some availability issues some time back.
I seem to recall that there was more than one US agent back then. Have you looked/asked to see if anyone else over there sells these wheels?
Failing that, you can order the wheels directly from the manufacturer, but *you* need to arrange customs/duty/etc. (they don't do it, I guess to protect their agent[s] in the US).
Here in Oz the contact details are: Performance Industries 60 Kinkaid Ave North Plympton South Australia
Tel: +61-8-8294-9455 Fax: +61-8-8294-1926
At least you might get some action if you complain to the manufacturers that their US agent is not doing his job!
Let me know if I can help from waaaay over here. Cheers, Paul.
--