(Description adapted from belbo's deal.)
These are at US$69.99 again, plus US$9.48 delivery (or US$8.48 to an Amazon ParcelPoint), which works out to around A$102-104. I decided to buy before GST kicks in on overseas purchases, but fortunately it has been postponed for one year.
If you have an Amazon eGift Card associated with your account, there is an offer of US$10 bonus for your first recharge of US$100 (~A$130) or more, which is equivalent to a 9.09% discount.
The hub is powered via a micro-USB US wall plug, so you will need a US to AUS adapter or an AUS micro-USB wall plug and cable. I'm guessing most people have a few spare ones these days.
The following text is from the product page.
Use your smartphone (available Harmony Smartphone app) or the included Harmony Remote to control your entertainment devices
Smartphone app includes Swipe and Tap control for one-touch control of your entertainment system, up to 50 favorite channel icons, volume, media playback, and more (Works with iPhone iOS 6.0 or later and Android 4.0 or later)
Included Harmony Hub lets you control devices hidden behind cabinet doors or walls, including game consoles such as PS3, Wii, and Xbox 360
Future-proof control of up to 8 devices: Works with over 270,000 devices including cable TV boxes, Apple TV, Roku, Sonos, Amazon Fire TV, Phillips Hue, Xbox One, PS3, and TV-connected PC or Mac
Waiting patiently for an Elite bargain, they don't seem to come up that often.