With legal retail cannabis businesses now operational in seven states, market data are valuable for monitoring population consumption patterns. Strong evidence from studies of alcohol and tobacco markets indicate retail outlet access and density, lower prices, and availability of higher-potency products likely contribute to increases in consumption, and potentially associated harms (Berg, Henriksen, Cavazos-Rehg, Haardoerfer & Freisthler, 2018; Community Preventive Services Task Force, 2015, ...