[thomk]

Any idea where those could be located on the us side of the border in Detroit?

[Jgrubb]

Aka “crispin” if that helps. Every apple farmer around here in NW NJ grows them, never seen them in a store. Also my favorite.

[fn-mote]

Farmer’s market. Grocery store that isn’t a big chain. They’re here.

[mikepurvis]

Given that it's a Japanese cultivar, I assume they're all over the place, you just have find a market where someone growing them has them for sale.