Chicago, Hong Kong, Seoul and Atlanta. Only been to Narita once or twice. Prices compared to what I can get at Total Wine in Greenville, SC or Liquor store in Peachtree City, GA.
In the last year or so, Johnny Walker is now same price in China (Dong Guan City area). And it is the real deal, not counterfeit stuff. Selection is limited though.
Manila? I'm jealous. Still on my list, gotta do the underwater museum they have - huge number of Japanese shipwrecks left undisturbed.