Just found this article which shows that a 1000 user license approx. is about AUD$11,000 and is AUD$107,000 for Internet access which doesn't need CALs. Pretty competitive against Hummingbird DM/RedDot and Interwoven Worksite/Teamsite combinations. Be interesting to see how the market picks up in Perth on this stuff and how soon. This Microsoft page covers what you need to buy product set wise.