Thats not bad, given the leather, COMAND, memory seats, 6CD on the car. IIRC I didn't notice Parktronic. Anyway, its gone to a new home.
What was it sold for, IIRC you were looking for over £20k for the car, if you got that, good on you, but that would have got your buyer a facelifted CDi. I personally would feel a tad guilty about really overcharging for a car, especially in a private sale, but the car is worth whatever someone pays/is willing to pay.
You are very lucky, I thought the sale of the car might have been due to a ban, which you were lucky to avoid given the law (personally I don't see it as dangerous per se). Glad you got away, but drive whatever you replace your E350 with a tad more gently.