I have terrible news for you: they got full cases, but someone has already grabbed the "good" stuff.
have you been wiping out an entire retail chain? I have 2 on my way home from work and both only ever had the Antman/Ares. 1 of which is wiped out already and reset with those playmotion things.
I haven't personally wiped out any stores (as PsychoPirate can attest), but stores received full cases. At $5 a pop, I can imagine scalpers/customizers/collectors could tear through a store's inventory awfully quick. For example, I purchased 9 Valkyries, 4 Cyclops, 4 Omega Reds, and 2 Ares, and barely made a dent in the Newnan's store inventory. There were literally full pegs (8-12 figures on a peg) of each character remaining, and I didn't even touch any Deathloks, Antmans, or Beta Ray Bills (which would have been in the dozens).