I saw a silver s550 on my local dears lot. The msrp is 106 and some change. It is iridium silver. All things considered is it fair to ask for 10% off sticker when negotiating?

 

Probably can work them for more ask for higher and they will work with you for the sale. Good luck.

 

10k off is fair... its still the beginning of the year so trying to get hte heavy 15k+ might be tougher...

 

When will the "end of year" time arrive for the 2012 s550? With no firm usa street date for the new model will the 2012 likely be the current model for the rest of the year?

 

End of year deals are traditionally August - October, but the magnitude of the discount depends on the overall sales year and the current supply versus demand. In 2010, there was an imbalance in our favor resulting in about $25k off MSRP, which is when I pulled the trigger. Mine was an October sale.