Changes in pricing of tobacco products affect sales of those products at varying rates, with demand for little cigars, cigarillos, loose "roll your own" tobacco, pipe tobacco and e-cigarettes more sensitive to price change than that of some other products, according to a study [...] Researchers also found that sales of nicotine replacement therapy products (NRT), such as nicotine patches, gum and lozenges, drop when prices of those items rise, [...]