Wagner, you pay way too much attention to magazine's estimates for pricing info. You have good intentions, I know, but auto magazines that give estimates mean nothing, I'm sure you can understand that seeing as how the M3 starts at 57k and not 70k. If you add premium, cold, and all that, it will be close, but still no 70k.

P.S. a 100% fully loaded 335 coupe ends up somewhere around 55k. If a 100% fully loaded M3 is indeed 70k, then the difference is still only 15k, which is understandable going from a normal 3 to an M3 (not to mention that a fully loaded M3 has options such as M-DKG, EDC and extended leather which are not even available on the standard 3).