Hi stuee,
I'm also in Australia and in the procrastination stage of buying a Davis Pro2.
I contacted Davis regarding the 24 hour fan and was advised that the daytime fan would be more suitable for me - I'm in outback Qld. YMMV. So, I'm after the 6152AU.
I've looked at bundled kits and found that they are more expensive than buying the individual components.
The best price I've found for the 6152AU is from Ryda: $938.85 + $9.95 shipping. (Does it really cost that much to change the frequency or is this just another example of the "Australia Tax"?
)
I also want the mounting tripod and the only place I can find is Davis itself.
For a Daytime Fan Aspirated Radiation Shield Kit (7747) and a WeatherLink (6510USB), the best prices I've found is Amazon. (Yeah grey import, warranty, caveat emptor, yadda yadda yadda.) The web site says that shipping is free (even, to Australia) but I'll believe that when I hit the "Buy" button.
Cheers,
Kev