Alex,
I too have looked at buying a 10" F4.7 OTA similar to the one Eric uses. And for some strange reason the price of this OTA is unreasonably high for no good reason. And as you pointed out the price does not compare to other scopes.
Especially when in the US you can get it for 500$ USD
http://www.telescope.com/control/pro...oduct_id=09959
Now the excuse of adding shipping an GST does not apply here becasue the source for this scope is China, so the US retail price would include shipping from China to US and I can not imagine the price to ship from China to Australia is more. But the Celestron and Skywatcher are made by Synta and I am guessing the importer is Expert Vision. And quiet likely the source of the high price is this distributor. As with all things Celestron in this Country we seem to pay a unreasonably higher price.
Regards
Fahim