as far as I know, you just tell the dealer what mileage you want the odometer to read when you order it and the 'factory' sets it. I've never heard of a charge to do this, other than the cost of the gauge itself, of course.
Sold my stock gauges yesterday on Craigslist for $50.00 to a guy rebuilding a smashed 2013. Sliver face only cost me a net of $50 bucks. I'm a happy camper or should I say Biker?