Outside midtown s Harvest cannabis dispensary, Sammy Magro said she had no problem standing in line to get legal THC cartridges instead of purchasing them off the black market as she had done for years. It was a sunny day in the low 70s and the line was moving quickly, so Magro didn t mind the wait, she said. I m excited about this. It s my first time buying legally, Magro said. I m looking for cartridges today because it s better than getting them off the street because they re pure. Bryce Hill said he has bought recreational marijuana in other legal states and he was glad adult-use sales had finally come to Pima County because of the tax benefits.