Think of it this way. the price of an item is determinted by how much of that item can be produced in a given amount of time. pay very careful attention to the following example: A car made in a factory that can only produce 1 car at a time that takes 10 days to make, will be more expensive then a car from a factory that shells out 100s of cars a day. (obviously no car company has a factory like that but its just a comparison)Compare that to individuals growing marijuana, and companies growing marijuana. but because its illegal THERE ARE NO FACTORIES and there ARE no companys. you dont realize it but right now marijuana prices are on a stool not flat ground. (flat ground being its TRUE value) Illegality makes production risky, causing the marijuana-price-stool stand even taller off the ground.