I am looking at purchasing a new 2008 XC90 with the premium, climate, and versatility packages, and the BLIS system. The dealer is advertising a price of $36,895. Their advertising copy cites an MSRP of $45,895. <p>Doing a little digging on the web, it looks as though the invoice for this vehicle was $42,470. If they took $9000 off the MSRP, and I take the same off the invoice, I come up with $31,470. I am thinking a reasonable offer would be about $31,000 even, given the time this has sat on the lot and the general car buying malaise today. Does this sound reasonable?<p>Thanks for any input!