Optus has today released its Pre-Paid iPhone 3G pricing.
The 8GB Bundle Pack will retail for $729.00 (Black only)
The 16GB Bundle Pack will retail for $849.00 (available in Black or White)
Customers can choose ANY Optus Pre-Paid calling offer when they purchase the Apple iPhone 3G handset.
To celebrate the launch of the Apple iPhone, iPhone Prepaid [...]

AT&T today announced its pricing structure for iPhone 3G– which you can plunk down money for come 8 am, July 11th.
Notes:

iPhone 3G will be available for $199 (8GB) and $299 (16GB) for iPhone customers who purchased an iPhone prior to 7/11, customers activating a new line with AT&T and current AT&T customers who are eligible [...]