Under prohibition, drug sellers have an incentive to sell the highest potency product available so that they can carry as little on them as possible and reduce their overall risk. But in states with legal marijuana, we see a wide variety of potencies. Like with alcohol, not everyone wants spirits and many people opt for lower potency wine or beer. Legalization provides consumers with clear packaging and labeling information about product strength and dosage, as well as an assurance that it is been thoroughly tested.