Did some simple calculations form the news item below.
They got 614 kilograms in 648 (supposedly kilo) sticks of compressed marijuana they valued at 9 million Baht.
so B9,000,000 / 648 = B13,888.89 per 0.95 kg stick which presumably go to a dealer network
assuming that dealers are selling in units of money eg B1000, B500, and say B200
let's say that you bought B1000 worth from a dealer
anything less than 72 grams (2.539 ounces) is profit
let's say that you only get half an ounce for that so the dealer makes 2 ounces in profit I (another 4 B1000 sales)
the dealer would potentially make up to 55K Baht if all his deals were for 1000 but i would not be surprised if they sell in smaller sizes in which case there would be more profit
that's, say, $2000 profit per stick
sounds like so very little to risk your freedom for - so nobody is really making big money out of it
except whoever gets the B9 million ($275,000)
ps, very rough yes and lots of assumptions but something to start with