The real and politically-incorrect reason for the higher prices is that the cost of doing business is higher in Australia. For example, the minimum wage is very high and consumer protection laws require the company to provide a 2-year warranty at no additional cost.

I wonder what the price differential between Australia and Europe is, at similar points in time, then as these 2 example reasons also apply within Europe. Such a comparison might go some way to explaining if there are structural reasons, as suggested by these specific examples, or if it is simply price gouging.