By some weird stroke of luck...this might work...my car has just under 30,500miles on it right now...if I keep my original odometer and drive another few miles or so, I could match the mileage on this instrument cluster on eBay, then do the swap, and I would not need to get the new cluster serviced to match my mileage...
I was actually quoted a price of around $1000CAD for the cluster + labour at the Mercedes-Benz dealership...I am considering moving to the US...the car will most likely come to...thank you for the information!