This is from Digler (on our forums).
We're currently working with him on trying to find ways to get these produced at a more reasonable price. He currently makes these all by hand (which is crazy). Measures out each piece and designs it all himself. I think there are only a few 'casted' pieces, which are the wheels and a few others.
I love that the 6x6 Cougar started life as this:
He also made a Sea Knight out of some Chap Mei helos:
Crazy.
It currently costs him around $400-$500 per piece (including labor/materials) and we all agree that's too much, even for a one-of-a-kind-great vehicle.
The goal is to get more pieces castable, economy of scale, etc to get the price down into the $150ish range. We're working on getting the Kickstarter up and running and will be posting more info once it's available.
In the meantime he's building a couple of 1:18th scale HEMTT Gun Trucks
http://forums.fighting118th.com/showthread.php?t=7093