I'm a little jealous, I really want to take my family on a big lap...
I've got to give you a heads up though, in many parts of Western Australia a powered site at a caravan park can cost you upwards of $100 per night. They are really expensive here.
As I said in my post, the numbers are averages so when averaged out over the year and the entire country my figures for caravan parks are about right.
Fair enough!