I feel lucky to live in a place where this black market existed for ages before prices went up lol, it's mostly chill, old granny-looking vendors just trying to make a buck. Border patrol gets countered the same way it always was, either corruption, agricultural drones, or both, and it probably helps a lot we grow a bunch of our own tobacco.
Like if it didn't go completely untaxed I'd rather have a black market than a market where big tobacco gets even richer.