New 2012 Mercedes SLK - Want to Order

I am wanting to order a new 2012 Mercedes SLK for my fiance. I have a source for ordering a BMW M3 at invoice which may be next, but no contacts for the mercedes.

Can any of you point me to a source (dealer or sales name) that specializes in a new ordered MB at close to invoice? I am hoping the answer is not "Any MB dealer can do this for you..." I am also hoping the responses are not "You'd be crazy to think you could find a brand new model at invoice.." I hope there is someone that does a lot of these with great feedback and results for other F-chat members. If I can order an M3 like this, I'm sure I can get the new SLK.

I would like delivery close to Phoenix but can go to SoCal for it as well or other areas in the US.

Thoughts? Have you all been successful with this recently?

Thanks. Robb