It's kind of all over the place because each state has different requirements and codes. I can tell you that in any state (Medical) youre looking at a couple of hundred thousand to start and that's even if you rent a building. The biggest obstacle is the fire marshal and the city's requirement. I have looked into it and paid 300 for one hour with Michigan's top Lawyer Matt Able and I personally know two dispensary owners and thats where I gave up!
Nothing is as easy as it seems from the outside.
supply will never meet demand