I get you. I'm actually okay sharing info here or via PM if its info I found on my own. For example, I just posted above a Bic Camera you could buy a Y12 at 9k at, possibly even this very moment. I've posted before that Seijo Ishiis can sometimes be the source of good but not MSRP bottles.

That said, AFAIK there are no more shops that have a steady supply of MSRP Suntory for a non-regular customer. As I mentioned above, if anyone knows otherwise i'm happy to be proven wrong here or via PM. Sure there may be a handful of mom and pops that might still have great deals somewhere outside of Kanto and Kansai, but the cost to get there will likely be greater than the difference between MSRP and lowest secondary.

I think the airport is still the best mix of pricing and likely availability, which is why I continue to post airport datapoints. Hopefully it helps readers here gauge whether they will be able to score a bottle there or not and plan their budget accordingly.