17,200 miles = 27 680 kilometres roughly.
There is nothing too special about the price. $48K for an American car with about 27,000KM is good but not good enough. Be patient, the right car will come in sooner or later. Looks like your set on this car because your not left with many options on autotrader when compared to the price and KM of this particular M3. Do remember its an American car. When you want to sell the car after your done with it, atleast half the potential buyers will stay away the minute they find out its an American car. There is nothing wrong with American cars infact I heard cars from the Southern States are better since their is not much contact with the vehicle and harsh winter road conditions. Warranty is also voided! Personally I need warranty on a $50K + purchase.