It appears that Australians are switching to Mac faster than anyone else in the world.
Macs are still a little pricey in New Zealand I think personally. It doesn't help having a distributor in between Apple and the consumer. When I was an ISV a few years ago, I looked at selling a few Macs to some customers. The distributor would only talk to you if you signed a guarantee saying you would sell at least $50k worth of Apple products per year.
Which I guess is why only the major retailers sell Apple stuff, although Harvey Norman for example, make no money from the sales of Apple computer equipment - the distributor buys shelf space. That is why in most stores, the Apple stuff is tucked away in a corner - and a commision based sales person is going to show you a PC first, because they don't get a bean from the Apple sale.
That needs to change, and the sooner the better. A low to mid range price point would help too - say a mac mini bundled with Screen and keyboard etc for around $1500.