we actually looked at GMs dealer inventory list. The salesman was actually not a slimey salesman like most. I was watching over his shoulder as he was looking, in the base model (LS i believe?) there weren't any available. the next model up would be 1000 more, but to get the color i want, it'd be worth it then try to talk down. He also had no problem showing me the page that THEY see. he had the option to click "for customers" or "for dealers" he left "for dealers" there, it had MSRP, "invoice" and the sub-invoice price thats either what they get it for or the absolute lowest they can go. whatever that was.
I've also learned that on websites, dealers tend to keep cars that people will want in their "inventory" just to get you to come down. When I was looking at prius's, one dealer showed 2 new on the lot, i called before going, and shes like well, no. we don't have new ones, but we do have used..