Seems a pretty good price. Anaconda have the unit for $399 with a free handheld GPS.
This unit includes trucking guidance and Hema 4x4 maps so well worth a look but the unit has mixed reviews.
Here is the link http://www.navman.com.au/car-GPS-devices/MYESCAPE/Overview/
JB also selling it for $399
It says it has AV-IN does anyone know if it will automatically switch to av when it detects video signal (from reverse camera) or it needs to be manually controlled?