According to TobaccoFreeKids, a pack of cigarettes retails for an average of $5.97 in the U.S. Smoking is an expensive habit, and it’s even more expensive if you live in Ireland, where a black market for cigarettes has been booming thanks to per-pack retail prices in the neighborhood of $11. Another pricey country for cigarettes is New Zealand, where the best-selling brand goes for $11.70, and may cost much more in the future: health officials there are considering the institution of a new pricing system that would result in a pack of cigarettes costing $80 by 2020.