In fact, growing under lights and carefully calibrated conditions doubles the cost of producing marijuana, Tuttleman said. In Colorado, for instance, retailers in November paid $970 wholesale for a pound of outdoor weed, according to Cannabis Benchmarks, a trade publication. In Pennsylvania, an indoor pound sold for at least $3,500 and as much as $4,160.
Why medical marijuana in Pennsylvania is some of the most costly in the U.S.
