Well the numbers are in and here's a summary.
We travelled almost 12500kms, the cost of fuel in round figures was $1250 meaning it cost 10c per km. Not bad really when we towed the camper for most of that distance and were 2 up all the way. Can't beat that
Staying with fellow Oz Stoc members certainly helped with accommodation but we stayed in CV parks most of the time and accommodation costs were $1500 - the most expensive being a cabin in Perth for five nights.
And yes Garry we did clock up quite a few K's in your car or Stinky Pete's which we could add in as well.
Hopefully Peter and I can have the pleasure of returning the favor some time down the track.