If you look at the rare corals page of that site, you can see their pricing. There are some small frags, and 5-8 polyps looks to be considered a colony on their site, and yes, they are running from $75 to $200, some at $100. I just dont consider 5-8 polyps a colony.
I also have to agree that $150 a polyp was kinda steep, even a month ago. But that was supply and demand. If there were customers that were paying that much, they cant blame anyone but themselves if they feel they were taken advantage of. The aussie acans were around a month ago at numerous vendors for less than that.
I am just glad that they are becoming available at all, at least for now. Thanks to the Australian Gov't. for making it possible for us to enjoy many types and morphs of corals not previously available to the reefing community. You have some beautiful sealife there in the 'down under'.