Mate you can get them cheaper off the internet and fit it yourself, however you wouldn't be getting $495 of benefit from it.
I am assuming the guys who replied are talking about about the S/C 6 CAI from Holden, but it only fits VN-VS so thats out.
There are some other systems around but to be honest you'd be better off doing a DIY job. There's heaps of threads on here about doing the 2 hole mod to your current airbox.