When you sign up to get your pin for the discount it give you a link to
http://www.gmbuypower.com/??????? At the bottom left corner of the page it has a link for "build your own". After you option it out the way you want, it will tell you MSRP and the discounted supplier price.
For a point of reference, a plain Jane 07 is:
Total MSRP: $29,995.00
Supplier Price: $28,138.18