On the first day of legal recreational cannabis sales in New Jersey, some buyers did a happy dance as they left the store while others held their purchases high with a joyful air. “Ladies and gentlemen,” Qwazi Robinson, 25, of Vineland, declared Thursday with a flourish as he exited The Botanist in Egg Harbor Township around 11:30 a.m., with an ounce of assorted cannabis strains that cost a total of $420. Robinson could have bought the same amount on the street for $100, but he wanted to come on the first day of legal weed “just for the nostalgia of it,” he said. “I want to say I bought pot th...