Camping in National Parks

I am going to be in Australia from the end of Nov-Early January '09/'10. My friends and I want to do some camping in the National Parks of Queensland and on Kangaroo Island. From what I've found on the National Parks website we have to have camping permits for each of the territories we want to camp in. Does anyone know what exactly the prices are of these and if we really have to get them. We are probably only camping for a total of 10 days throughout the trip and it looks like most permits last 12 months. If there is no way around getting the permits is it possible to share with other travelers? I would really appreciate any help. And if anyone has any suggestions as to the best spots to camp in Queensland around November 27-December 5 or on Kangaroo Island around December 20th I'd really appreciate it. Thank you!

Some (but not all) national parks have an entrance fee, and then you have to pay extra if you want to camp. I think what you are referring to is a 12 month "subscription" which would allow you unlimited entry into the national parks.

Personally, I'd simply pay for your campsite on the nights you are camping.

Any suggestion as to where to camp in the Queensland Territory? We are going to do diving, but will probably opt for a hostel while doing that.