If you don't live here (in Australia) and think Australians should be charged (quite often) upwards of twice the price for things.. Fuck off and die in a house fire. You're a bad person. Well, no, that's not exactly true, what you are is a dick with an opinion (that is wrong). Please educate yourself or die in a house fire - your choice. Should I work twice as long so I can experience the same product as you? Obviously not. Prices should most definitely be sold with "economies of scale" in mind, yes. Do you have $90 US games? We do. Skyrim, for instance - and that's through digital distribution!
The ultimate question is always this. Why can I have "some guy" on ebay in the UK ship me 1 single copy of a game through snail mail (expensive) to Australia and still end up paying 60% of the price of the game, locally. Why? how is that possible? It can only be possible because somewhere in the market we are getting fucked over. There is no other reason. If I can buy 1000 copies of a game, I can get a better price. SomeGuyInABedroomOnEbay98 can trump the entire Australian retail sector walking into a shop in the UK (and just so you know, the UK are also victims of this gauging) and paying for a SINGLE UNIT to be shipped to Australia.
But, we're evolving. Even the previously unsavvy commoner is going online to get a better price - We're just buying stuff from people around the world, that realise they can exploit this gauging themselves. And thank (whoever) for them ! Thank you! Please, feel free to get on board. Ship the products bought locally to us! Meanwhile, the retailers are seeing diminishing sales, crying foul and attempting to have us taxed, so they can continue to exist without evolving.
The key point in here is that there is always someone either gauging or offsetting their shitty distribution chain management onto the customer. A guy on ebay can beat them. Distributors and retailers will have to evolve. One of the mechanisms that will facilitate this is by mandating that prices in this country MUST be justifiably so.