I would think that this 440-500 pound loads were purchased or partially purchased with pooled funds from some guys around Ralo, he's just the front man, everyone puts in 100k or so and you have a half mil to re with. Atlanta is probably just part of the market for those, probably smaller towns across GA, but Atl is a huge marijuana market, and people pay near double what they pay in Cali. I bet they were getting outdoor pounds for like 1500 and indoor for 2000 and charging almost 100% mark up.
Based on the sheer weight dude was moving, he definitely was paying way less than 1500 (outdoor) or 2000 (indoor) per pound.