With cannabis now legal in many US states we can begin to calculate the cost savings and its impact. As some expected the states with legal weed are seeing prices steadily drop to an all time low. This map shows how much weed costs in each state ($NEWS) and from it you can see just how the cannabis landscape is shaping up. Still surprisingly the first state to legalise weed isn’t one of the lowest, but it’s still a saving not to be ignored.