Dick Smith - TomTom XL 4.3" GPS Satellite Navigation For Under $200 + Free shipping Save $130
This is one of the best GPS' on the market. The EasyPort system is great - no separate windscreen mounts to carry - just fold it in and out from the back of the device.
The TomTom user interface is one of the best I've seen.
If you want an excellent satellite navigation system for a good price, this is it!