Andy,
Try these guys http://www.mandrakessolar.com.au/pricelist.html
The agent is based in Ningi (Bribie Island), I bought a set of 80w off him late last year, good service and back up.
I paid $300 for them which included a 5m lead that you can plug directly into your Anderson Plug.
Still got mine sitting in the box and haven't had to use them yet, can't run the battery flat enough to justify using them, this should change once the fridge is fitted up to the camper trailer.
Hope this helps.
Cheers
Paul