Sirius Optics has an interesting webpage on Coronado gear (with prices):
http://www.sirius-optics.com/coronado.htm
ATS also has a decent page:
http://www.atscope.com.au/coronado.html
I think I've heard that Telescopes & Astronomy (
http://www.telescopes-astronomy.com.au/), handle Coronado too, but I can't locate the brand on their almost unnavigable website.
There may be other vendors too, now that Meade own Coronado - perhaps any Meade dealer can stock them or at least get them in?