The Ausdroid Shop has all your Nexus accessories here.

Even though the relationship that was Garmin-Asus has ceased, that hasn’t stopped Dick Smith stocking the Garmin-Asus A50 for Optus Prepaid and selling it at a low $199, which appears to be the current price for Android prepaid devices. The device is very navigation oriented, so if you enjoy travelling this just might be the prepaid phone for you, just make sure you’re on Optus as this little baby is all locked up.

Source: Dick Smith.
Companies: ASUS, Dick Smith, and Optus