For medical cannabis, you must be 18 years or older to apply for a medical marijuana card and purchase products from licensed medical dispensaries. Conversely, for recreational cannabis, individuals must be 21 years or older to purchase products from licensed recreational dispensaries.

Lightshade administers its own state-of-the-art cultivating facilities and is known for its high-quality cannabis strains. They grow some of their incredibly potent and clean marijuana, which is then expertly tested for accurate THC levels in labs. The result has some of Colorado's highest THC levels of any cultivar.

Sometimes, it's easy to forget that cannabis was once illegal in Colorado—especially in a small ski town with seven dispensaries in its downtown core alone. Aspen is notorious for having the highest pot-shop density of any city in the state—one for every 850 people, based on a 2014 population figure of 6,805 residents.

The three least expensive states for marijuana, however, are all in the West region and all allow for legal recreational use: Oregon ($210.75), Washington ($232.90), and Colorado ($241.74). The national average is $326.06.