MB's standard markup is 7% on the car and options. On the net check out these sites:<br> <br> http://www.edmunds.com/<br> <br> http://www.kbb.com/<br> <br> http://carpoint.msn.com/home/new_research.aspx?src=Home&pos=Res1<br> <br> There are some differences in these sites invoice prices. I did a lot of arithmetic and discovered that most of the items had a 7% markup, so I assumed that anything else was wrong. My sales rep was astounded that I had accurate numbers and comfirmed the 7% markup. When negociating don't forget about the 3% holdback. This 7% markup does not apply to dealer installed option such as the cd-changer. They can charge whatever they can get away with.<br> <br> Assuming you are talking about the C2, C4 and C6 packages, carpoint comes up with an MSRP of $43685 and invoice of $40674, not including the cd changer. As I said, the dealer can charge anything they want for the cd-changer. The range posted on various fora is $0 to $1200. Whether this is a good deal or not depends greatly on where you live.