They don't do ISO kits for their SA in shop.
Like ICE set, industrials etc.
No ISO
I'm starting to move from concerns into conjecture, but they wouldn't run Nuclear Data as a dye-subbed set (like Ice or Industrial) given the white legends. It'd have to be a full double shot set, similar to how they have recently restocked DSA Dolch. I just don't imagine there being many kit options, blanks, nor relegendables for Nuclear Data if it's handled this way.
On the bright side DSA Dolch still appears to be in stock, which might mean those who want it may have a chance at purchasing Nuclear Data if it's offered through the store, but then with so few kit options and a much lower demand on DSA I suppose it's not all that surprising that Dolch is still in stock.
Aware that I've fallen into the rumor-mill, would anyone care to pull me out with some hard facts?