Rising Tobacco Prices

With the rising prices of all types of tobacco, many consumers are switching to foreign made cigarettes. Why are the prices of tobacco products rising, and how much farther are they going to rise? If foreign companies are shipping their cigarettes to the United States to be sold for less, will smokeless tobacco companies in foreign countries send their product over to be sold as well?. Everyone knows that smoking is bad for them, but with the rising prices of cigarettes, why aren't more people quitting, instead of buying foreign, off brand, cigarettes?