Yes, agree there are a multitude of reasons why brands do things differently.
And generally, one should indeed expect an Oz dealer selling above (and way above in some instances) exchange rate parity to provide a silver service. There have been numerous exceptions to this that I have been privy to, but of course this is possibly the minority.
Any high end hi-fi business in Oz should understand they are in a global economy.
If someone can hop on an aircraft to another country, purchase "a box" and bring it back home and save significant dollars (even including the air fare/accomodation/Oz GST/Oz duty etc etc costs PLUS fully taking the possible warranty risk, transport damage risk, no local set up assistance etc etc), then perhaps the local Oz dealer should re-think their numbers. (Note: I am not implying this is necessarily the case with the brand at the start of this thread.)
In my opinion, I feel any Oz dealer selling significantly above exchange rate parity is selling themselves and the brand they represent, short. Yes, they will still move some boxes but some prospective customers may have been lost because of it.
There is a brand (that I won't mention) where this was the case and they now have much more "realistic" pricing in Oz than they did before with a new distributor (who is very competent). Surprise, surprise, they are selling more boxes than they ever did.