New Jersey’s cannabis market is charging customers less and bringing in more revenue, but frustrated medical patients feel like they’re being left behind. Cannabis is predicted to be a billion dollar industry this year, and initial sales have been brisk, according to Cannabis Regulatory Commission executive director Jeff Brown. Sales increased by 35% in January and 42% in February compared to last year. At the same time, adult use prices have dropped by nearly $2 per gram to $12.22 and medical prices have dropped by nearly $1 to 10.48 per gram. But at a string of protests at the Statehouse and…