Right now, the 16 GB Nexus 7 is available on the Play Store for ¥19,800 with a shipping time of 3 to 5 days to addresses in Japan. There is also a Japanese website for the Nexus 7 now.
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"In the face of entropy and nothingness, you kind of have to pretend it's not there if you want to keep writing good code." -- Karl Lehenbauer