I regularly pay $100+ a brick for .22 ammunition. About the same price as I was paying several years ago.
. . . Of course this ain't no bulk packs, this is the good stuff. Price hasn't changed much, if at all. Availability is poor, but I can find it online.
One of the sites on ammo seek had 5000 rounds of 22LR for $200 not long before before the kids got killed in CT. There were a few sites with ammo at that price in bulk. I never bought it because I thought like everyone else, we'll never have to worry about 22LR not being available.