There are a couple of guys in the "Export Models" section on this forum (this is where the aussies hide out), who have signed for $93k drive away. Even for that money it is 1/2 the cost of an X5M/ML63, so they are still cheap for what you are getting.
Apparently the previous SRT8 Jeep was $103k drive away according to my dealer, he just said it was under that.
The $88,500 price I quoted would include LCT, but not stamp duty or rego, so the $93k is about on the money.
I can get super deals on BMW, but would not consider an X5, as IMHO the Jeep is a nicer car inside. I will be waiting for the 2014 SRT8 die to the bigger screens and the 8sp gearbox and I want a White one.
The release will be in August, due to some BS reason from Jeep, although most dealers will have one next month if Jeep AU release it to the dealers.
I do not work for Jeep, but read a lot about the cars on forums and the press.