I'm retired for the selling game, but back when I used to... When I was smalltime I sold to friends (cheaper than what they'd pay on the street) and when I had pounds I'd sell to a middleman, a guy who would both buy and sell, depending on where the money was. Who he sold them to I never knew and didn't care.
Oh I'm not gonna tell you that. But a person could net $75,000 with a pot garden in a spare 12' x 12' room. Outside, on a few acres, someone could easily grow a milion bucks worth of weed in 1 season.