Like my car, you car has those Flexible Service A and B. The FS A service costs about $150 - $200. The FS B service costs about $300 - 350. The service description are listed in your maintenance booklet. Also, the brake fluid changed and coolant changed are required every 2 years and 3 years respectively.

I also have the extended 8 years/100000 miles warranty from MBUSA. My idea is to let the dealer performs all the required maintenance until the extended warranty is over. That way if your car has any problem, MB can't say that you didn't follow the schedule and not pay for the warranty repair.