As already stated, Dolium (in Perth) are the importers, Opposite Lock are the distributors and they are the Front Runner ones from South Africa.
I still can't understand why they have to be so expensive here. I've got the rear quater panel tank and the 50 litre cargo barrier tank in my Defender.
Postage from South Africa is cheaper than postage within Australia, the rear tank cost me $50 to have posted. I had to buy the other tank locally after the aforementioned complaints.

