The U.S. Cannabis Spot Index averaged $1,562 per pound in 2017, a 13 percent decrease from $1,789 per pound in 2016, according to Cannabis Benchmarks Annual Review & Outlook: 2017-2018 Edition. The Index declined only 6 percent throughout 2017, opening at $1,532 and closing at $1,436, in contrast to the 20% decline seen in 2016. […]