How much the individual actually winds up spending on marijuana will depend on several factors, most obviously the quality (and price) of the pot and how much one smokes. Researchers used the crowdsourcing site PriceofWeed.com to get the $185-per-ounce figure. As of early April, an ounce of marijuana was averaging $206 on the black market, and because the price is expected to drop once pot is legal, the study landed on $185. If the smoker is opting for higher-quality, $300-per-ounce marijuana, his annual pot bill would top $1,000. That’s for someone smoking the average of 3.53 ounces per year. A heavy smoker who goes with $300-per-ounce pot and uses, say, half-an-ounce monthly could expect to drop $1,800 annually on his habit.

That may sound like a lot. But a pot-smoking habit is probably cheaper than a cigarette-smoking habit. Colorado is one of the cheaper states for cigarettes, but a pack still goes for around $5.19, according to one state-by-state price check compilation. So a one-pack-per-day habit—purchased one pack at a time, not by the carton—comes to $1,894 for a year.