I've actually seen this car but not driven it. Look its very clean but IMO low km M3s are hard to judge. Why does it have such low KM (honestly), how hard has it really been driven (hard to tell since components won't show true wear due to low KMs), could be a problematic car later in life with more KMs compared to one with 70,000+ on the clock with regular and preventative maintenance.
For the price he is asking it almost puts you in a 07 E92 M3.
I would rather get one with average KMs and do a few things with the maintenance and keep it at that. At the end of the day is the premium price really worth it?