All I know is I won't be a adopter of it, heck they at the moment can't produce enough .380 or 9 mm and now they are off on this tangent.You can’t find.32 Federal and that’s a similar premise. See this one being a flash in the pan.
Time will tell.
Just came across this nugget of info.
"Pricewise, 30 Super Carry looks to be about the same price or perhaps just slightly more expensive than comparable 115-grain 9mm ammunition."
So at the moment a buck and a half per round.