10 was a bit of a guess, but I know for a fact that I've been picking up a QP (approx. $900) every week since March, and before that I was picking up maybe a zip a week. So let's round it to a P a month, that's six months, so six pounds since March. Let me add, I never said I smoked it all, I smoke probably half a zip of it to myself, and I just sell off the rest to buy some more. It supports my habit and I make a little on the side.