The interesting thing to me is the dispensaries tend to price their product based upon street pricing. It hasn't gone up or down significantly that I'm aware in any legal markets. The consistent quality of the product has improved significantly in cities where dispensaries have opened.
@hd4mark. The only dispensaries in DC are medical. It's still not "legal to SELL" cannabis in DC. SO what has happened instead, is these little markets or trade shows where you could go and buy paraphernalia, t shirts, posters, stickers, etc and the vendor would give you a 'gift' of cannabis based upon how much you spent. haha....those quickly evolved into meetups and delivery. So basically, you can order pot in DC and have it delivered to your home even though there are no legal dispensaries.
In most legal markets violent crime has decreased and there is no significant increase in traffic accidents or fatalities that can be attributed to cannabis use. Opioid abuse has decreased in most legal markets as well.
NY's approach was interesting...and one I think most other states should have adopted. In NY they're like 'It's now legal"...we'll figure out the rest... In VA for example the legislation was signed but doesn't go into effect until 2023 when dispensaries will open. In the meantime it's decriminalized. An ounce or less is a $50 fine.