Nintendo Is Seeking Player Feedback On Game-Key Cards In Japan | Nintendo Life
(www.nintendolife.com)
I suspect, just by looking at the current market regarding microsd cards, that anything smaller than 64gb would actually be MORE expensive than the 64gb. going from 64 -> 32gb adds 2ct/gb, going down to 16 adds nearly 3ct/gb in addition, and i suspect that they would love to price the smaller cards even higher because the margin must be pretty tight by now if i compare the prices with what they were a few years back.
Also, production for smaller sizes has probably shifted down dramatically in the last years when i look at availability.