Price of dodge viper / corvette?

I live near Melbourne, and i want to buy a dodge viper RT/10 GTS, or a Chevrolet Corvette C6 Z06. I want to know how much either one will cost, in Ausralian Dollars. And also where in Australia can you buy one? (PICTURES BELOW)

Dodge Viper RT/10 GTS picture: http://en.wikipedia.org/wiki/Image:Red_Dodge_Viper_GTS.jpg
http://en.wikipedia.org/wiki/Imageraginline_waiting.jpg

Chevrolet Corvette C6 Z06 picture:
http://en.wikipedia.org/wiki/Image:CorvetteC6Z06yellow.jpg
http://en.wikipedia.org/wiki/Image:2006Vette.JPG