I know you're trying to give businesses the benefit of the doubt, and I always hear some argument trying to rationalize unethical pricing by saying that there's some obscure "cost of doing business".
Realistically, it's rarely ever the case that the framing, represents the truth. In reality, the "costs" associated with doing business, by a certain company, are often specific to a company's "mode of operation" as opposed to the oft quoted "realities of business, in a specific market".
For instance, maybe they spend excessive tons on marketing, and expect to reap a certain percentage over that investment, banking on the good reputation of Western Mountaineering as one of the best sleeping bag manufacturers in the world. Or maybe, they simply have a monopoly, on a coveted item, and are simply charging what they think they can get.
I'm sure plenty of people that work for the company, and an infinite number of staunch defenders of the dogmatic "free market capitalism", could come up with tons of various justifications. However, personally, as a small business owner. I'm going to call BS. There's likely no it's a necessity of business realities in Australia, more likely a perception of deserved profits, and shrewd business. i.e.: They have exclusivity, and they intend to bank on it.
That's what exclusivity is all about after-all, no matter what BS anybody invents to feed you contrary. Corporatism is only about the customers interest, in-so-far as it pays dividends. That's a core truth.
Of course, there is always the argument that "If you don't think it's worth what they're asking, don't buy it." I agree, don't buy it, but do it on principle instead of price.
What I'll say to our Australian contingent: Boycott price gouging, and buy from individuals/small businesses that ship international directly, and shun corporatist monopolies.
Just my 2c, admitted, highly opinionated.