The grass might be greener on the other side of legalization, but it's DEFINITELY cheaper. According to a new report, the average legal marijuana user spends only $647 per year on weed. Of course, we don't all have the luxury of living where weed is legal, and if our monthly THMQ shows us anything, it's that the average U.S. marijuana consumer is most likely paying much more. But you tell us! On average, how much do you spend per year on pot?