This story tells us why the cost of commercial marijuana is so absurdly high. Growing under artificial lights is economically ridiculous. Marijuana should be grown under sunlight, either in fields or in greenhouses. Further, the "security" requirements are ridiculous; there's no good reason why marijuana growers need any more security than tobacco growers. 

A few simple steps like these could bring the cost of marijuana down to the same level as other agricultural products, with prices in dollars per kilogram instead of the current dollars per gram.