Hi you guys have been a great source for tracking down whiskys in Japan so wanted to give back and let you know what I found.
(Prices in yen)

Narita duty free
Hibiki 17 - 20000
Hibiki 21 - 50000
Hakushu 18 - 50000
Yamazaki 18 - 50000

The liquor store in kurumon ichiba market in osaka out of most aged stock....
Had two bottles of Hibiki 21- 25000

Hiroshima Bic Camera by the station
Plenty of Hibiki 17 - 11800
Yamazaki 12 - 8830
Hakushu 18 - 24800

happy hunting guys