Singapore has you all beat. A single pack costs S$12 (US$8.30) upwards, and while SIN duty-free has some of the cheapest tobacco around, the kicker is that the duty-free allowance
into Singapore is
zero -- no more than one opened pack (not carton, pack) allowed. And no more sneaking in smokes once this goes through next year:
http://afp.google.com/article/ALeqM5...t8f-G-fPkqBilw