Got mine from ZAPI in the US. Cost was about US$772 for the controller and US$200 for the postage. I also purchased the handheld console for programming for US$300, that isn’t essential but I thought it would be a good buy so I could do some fine tuning. I’d be happy to lend it to anyone here in Perth if they needed it.
My unit is a 120V 600A unit, other prices I was quoted were
400A = $548
500A = $676
600A = $772
Contact details for the guy at zapi are
Office: 919.789.4588
Fax: 919.789.4583
Mobile: 919.757.3673
The prices were from a while ago so may have changed by now. Total cost to me after everything in Australian dollars was $1600 although it should be quite a bit cheaper now with the Australian dollar as high as it is.
Only problem is that they have a 14 week lead time on all orders.
I was quoted a bit over $2000 plus GST for a curtis here in Australia without postage or any programmers etc.