Where are you reading that these devices were on "store shelves"? Why would they be? Hezbollah doesn't buy their pagers retail, do they?

i edited some certainty out of this

Let me add some certainty back to it: both Reuters and the NYT are reporting these are pagers specifically procured by Hezbollah, directly from a manufacturer.

https://www.nytimes.com/2024/09/17/world/middleeast/israel-h...