Well Evan said it costs $2,300 if you order it factory installed on your car not if you get it through the dealer. M-B options are always outragiously priced. Like $3,000 for adaptive cruise control, when Nissan/Infiniti and Toyota/Lexus offer it as an option on their cars for $1,000.

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1999 Mercedes-Benz S600, 103K miles - garage queen
1988 Mercedes-Benz 560SEL, 89K miles - daily driver
2007 Hyundai Sonata Limited, 31K - daily driver