Can't speak for the specific car, but I've visited that dealer numerous times. 100% legit. They deal new Ferarri, AM, Maserati.
2014 Porsche Cayman S
2013 E82 135is DCT (SOLD)
2011 E92 M3 (SOLD) 6MT
2011 E82 128i STEP (wife's car)
2007 E92 335i (SOLD) 6MT