I agree Ken - that's a shocking website. Very poor indeed.
Given the pricing in US dollars IN America - I think that it's going to have to be priced along the lines of what we already have access to over here - and it's not as functional or as permanent by the looks of it.
The mid-range model is US$2 grand - over there. Translate that to AU$, ship it (huge volume) and put a profit margin on for the distributor and you've got a Lego block probably approaching the same price as a real dome observatory.
Ah.... the tyranny of distance.
Maybe the manufacturer will give the distributor a great price and we will be able to purchase these at reasonable cost...