IMHO: They do not have them sitting in storage. What
they have
is a small hand-run chip-labeling machine and a bunch of random
chips. They grind off the original part numbers and label them
to whatever you wanted to buy. And they have a website with a bunch
of part numbers culled from various databases.
Google "counterfeit chips" and "counterfeit transistors".
Or used chips.
--
Will