well i know its gay but i used to play this game online which cost me 5 dollars a month but i sold items from the game on ebay, i made two thousand dollars over 6 months. problem is that it became more time consuming and not really worth it got really boring.
i also sold pot some but i never grew it due to scared to be caught. i knwo someone who has 23 plants in their basement though, the dank dank nugs might i add.