I think the sell price should be buffed for meth and weed because there is no reason right now to do either of the two, As lean is quicker and more profitable. It is very rare to see ingame a drug dealer doing either of the two and i believe buffing the price would see more diversity for drug dealers. Also more diversity for government drug busts as its way more satisfying to raid a trap house full of weed then to confiscate two barrels.