What exactly does a $7 Coke get you?If you’ve been buying that Coke at Atlanta Braves games, it has helped to build a new $670 million stadium. Baseball season has arrived and SunTrust Park will make its regular-season debut April 14 when the Braves face the San Diego Padres.Atlanta’s new stadium has certainly generated its share of buzz. I even watched portions of a two-hour TV special on Fox over the weekend that was devoted entirely to SunTrust Park.