I am leaving Melbourne on 19th March Monday and planning to get to Perth by 27th March.
I got a ford transit bus and there is 3 seats available. It is a fully air-conditioned and there is a couch in the bus :) and I got a trailer.
We will do Great Ocean Road, Grampians, Adelaide, Nullabour, Esperance, Albany and Denmark.
The cost is $300 per head - I have tents, BBQ, Seats etc - you have to provide food and drink. We are camping and you need to pay for camping site which won't be much.