They've gone back to the bad old clusterF*&^k of charging 'per site'. $15 p/n for up to 6 people and one car, or an extra $6.20 p/n for each extra car. So, not that much difference if you have a full vehicle.
Full marks the the bureaucrat that thought it was a good idea to do away with the previous scheme was easily workable for most of the punters, and had a strong incentive for self-policing. Good luck for the rangers trying to work out who to chase down in a camping area with no distinguished sites & free parking during the day, particularly during the mayhem of Easter when they actually bother policing the fee policy. Good luck for the average climber trying to figure out how much you're actually supposed to deposit when one car came for 4 nights with 3 people, the 2nd came with 4 but one stayed 2 nights longer and hooked up with a 2nd campsite for 3 of those nights and then hitched out of town, and the 3rd came halfway through with 5 people, then track down the appropriate change from everyone and share out the cost.
So much easier to donate a whole-note amount to the friends of Arapiles letterbox by the pines dunnies then spend a disordinate amount of time whinging about it on an internet forum until the powers that be come to their senses. In the meantime, I'll happily continue making donations to the shiny new, highly over-engineered dunny in the gums that must have cost more than the equivalent of least two or three years' worth of camping fees to build. And yes, I had way to much time to think of this rant on the 11 hour trip back to Canberra.