man yall chill the fuck out, every1 is always SO errogant on this site, no one is ever nice and helpful about shit. Ne ways like a few nice people around here said, buy some scales. Dont buy that stuff from ur dealer, maybe get a different dealer, ne ways smoke it, see how long the bag lasts, and if it lasts as much as a normal 30 bag would then ur good. u can only find out.. come back and tell us how it smokes.