Optus iPhone 3G Price Plan
Optus is making the iPhone 3G affordable for everyone. We’re introducing a great new range of iPhone specific plans that are loaded with BONUS mobile data value for Mobile Internet Browsing to allow you to take advantage of the iPhone 3G.
To celebrate the launch of the iPhone, customers who connect their iPhone to an eligible Optus iPhone rate plan up until the end of August will get their first month of Mobile Internet Browsing for free*.
Source: http://www.optusiphone.com.au