looking for GPS

I am heading to Aussie with my folks in a couple of weeks time. It would be a road trip and the bloody GPS rental cost like 80 AUD. I am keen to avoid this all. After all, that cost of rental, could probably allow me to afford one.

So well, I am asking my friends out there if any of you guys have one which I can borrow for about 10 days. You probably wont get 80 sing for your trouble.