Exactly.
Aside from the re-sellers, what's been happening with .22 ammo is people who used to buy a box or two now and then are now buying a brick whenever they can. And people who used to buy a brick are buying multiple bricks.
Which is why there isn't much .22 ammo on many store shelves--at least for very long.
It's been a long time since folks in MT bought a box or two (of 50) and this goes back 40 years for me. A brick or two was the normal purchase.
The rest of the US I have no idea except SB target shooters who purchase at least a case after proving a lot.
But I have best lots of AEagle puchased in 1989 thru 1994 for $69/ case of 4000 rounds