I got mine from Mo Tackle at Coffs, but I don't think they sell them any more. Haven't seen any in the cattle dog for a while - it is a smaller version & is not copper - just galvanised! If I was in NZ, I'd get the copper one & bring it back with me! They last forever. Someone else also makes them over there (even bigger) & with a different name. They are often sold in Disposal (Army gear) shops over there. I saw it in Queenstown.
I have seen a similar version at the Caravan & Camping show in Sydney, but it ran on metho (tho I assume you can use twigs) & was also quite expensive. Mine was about $30.
There is another one caller a Kelly Kettle but it is 60 Quid in UK!
Check this out for a heating contest (about 1/2 way thru).http://www.youtube.com/watch?v=vJuJf44jwkA
Check out the Jon Spink boiling water & one of his vids also show cooking with the base - the bases are very stable.