Smoking Question

Okay so earlier tonight I was in a gas station with the Wolf Fighter and we noticed a sign that piqued both of our interests. So basically it seems that a person is limited to buying only 10 cartons of Philip Morris brand cigarettes in one day. Now I know I was a smoker but I rarely ever touched cigarettes. Only in desperation if I could not find my mini-cigars of choice. Now as far as I understand a carton contains 10 packs of cigarettes. Buying one carton a day is crazy but I guess understandable considering the addiction level. But honestly who was buying more than 10 cartons in a day to warrant such a limit? Is it really that deep? It makes no sense to me.