ClassicClay

Just buy it from the UK bro! They have PAL too so you can play games bought here as well.

Step 1: Get a UK power adapter from Ebay (x2 so you can charge your game-pad as well) here: http://goo.gl/gzbNsP

Step 2: Order a WW HD Wii U from Amazon.uk here: http://goo.gl/N3cV56

Step 3: When you boot up your console set the country as UK. London is nice around this time of year

Step 4: Make a 'dummy' UK account. DON'T us your legitimate email. Make a new gmail or something for it.

Step 5: Use this account to access the Wii U online store and redeem the WW HD code. Download and Install.

Step 6: In system settings change the console back to Australia and make your legitimate account.

Step 7: In system settings, manually download the 1GB system update (Highly recommended!)

Step 8: Enjoy Wind Waker HD on your brand new special edish gamepad!

Step 9: (Optional) Periodically sign into the UK account to check if the eStore is cheaper in the UK.

Source: Did it myself. 100% confirmed WW played like a charm

You're Welcome!

Classic Clay

EDIT: I'm not quite sure this is in the right section so mods feel free to move me around.