For an intercooler + 2 turbos, 6.5k sounds about right in comparison to other TT car prices I've seen.
If that's aussie's long used system, I feel better about it.

Problem is, they need a lower tier turbo option as well. 6.5k is a huge chunk of change. A $3-$4k option will get more buyers. As soon as a company becomes available for it, then its a go.

I'm sure ZZP will be a reseller for this APS turbo soon as well.

Overall: http://www.airpowersystems.com/products_usa.html
G8: http://www.airpowersystems.com/g8/g8_itt.htm

Guess reusing car designs does come with benefits (aftermarket).