A friend of mine bought a chagama (kettle for japanese tea ceremony) in Japan - not made of cast iron like usual, but of aluminium

It has a nice arare-pattern and really looks like the "real thing".
Sadly, he has no idea where or how to get one of those outside Japan / online.

Does anyone know an online shop selling something along these lines?
Of course I know about the "iron is better for the taste" etc. points for buying a real one.
Well, for the time being I wouldn't mind saving a "few" bucks (my friend told me he payed about 50$



Also, considering the light weight, shipping from Japan shouldn't be as expensive as for iron kama/tetsubin. (this sounds also handy for picknick)
So, if anyone knows a shop for these ("Tetsu"bin in alu would be interesting, too...

Cheerio!