Welcome to G/N's Ian - They are being made in Victoria - They are what is basically commonly called a stick and tin van - not composite roof or floor. These vans are not cheap in comparison to other "Manufacturers" - who import major componentry and sub assemble in Australia.
There are currently many Companies with less than $100 paid up capital, Mum and uncle Fred Directors, Rented fabrication units, in the Australian market place - most operate in Victoria because of lax regulation in that State. Some even are re-birthed failed Company's.
Due diligence is required, especially when purchasing from newly opened businesses check out buying information at www.caravancouncil.com.au/rv-buyers and get free advice and check lists.
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Possum; AKA:- Ali El-Aziz Mohamed Gundawiathan
Sent from my imperial66 typewriter using carrier pigeon, message sticks and smoke signals.