I’ve been to the one in Hiroshima. The volume and variety of products is jaw-dropping and fun. Though I was disappointed, although admittedly wasn’t looking to hard, to see the prices were comparable to American prices for the same products - at least for new lenses.
It was also great that it was basically attached to the rail line. Such a better development pattern for business and moving people than airlines and airports.
Yep, I was in Tokyo last year and scoured the earth looking for decent deals on used film cameras. If anything they were selling at a significant premium to US prices. It was quite disappointing.