I'm 16 and always have some herb on me. I buy in eights or quarters, I usually buy probably a sack every couple weeks at the least sometimes more if i'm getting it and I smoke about an eigth every 2 weeks. I just always make sure that I'm getting a new sack by the time my old one runs out, usually a little bit before, I just buy it when I have money, I don't spend money on anything else really. I only smoke dank or really good mids so if its mids its 30-35 an eigth, 60-70 a quo, but I usually get dank which is 50-60 an eigth, 100-110 a quarter. I have a bank account with alot of money and my parents dont get suspicious if I only take out in increments of 40 dollars or less, and I sell grams for 20 here and there to a friend of mine. I usually accumulate a good 60 dollars every couple weeks.