If you walked into a store today, it'd cost you $218 to pick up the new Nintendo 3DS from any of the regular retailers.
Alternatively, you could pay less than $150.
It's coming up to Black Friday in the United States, but fortunately Australians are getting greater and greater access to some of those deals. And if you pick the cheapest shipping option, you can get the black Super Mario models of the New Nintendo 3DS for a measly $145.51.
I'd suggest moving quickly on this one. I saw another listing for a New 3DS that stopped being available for Australians during the process of writing this story. Remember, this is the smaller 3DS - not the New 3DS XL. That said, a lot of people prefer the smaller console.
And just to reinforce the point, here's EB Games and JB Hi-Fi:
Update: As a couple of commenters have noted, if you grab a New 3DS from the United States - or any 3DS - it will be region locked to the US. That's not a problem if you order all of your games from Amazon as well (and you can save a bit today by doing so) but it's something you should consider before checking out.