Don't forget taxes and shipping for the online stores. It adds 2-3cents per round and adds up when you get several bricks.
As for 'supply', I'm in Moncton NB and one of 2 Wallys completely dropped ammo and the other has Very Little - like a few boxes last I looked. Same with CanTires, one dropped - one very little and very pricey. And One BassPro with only a few brands on hand, been that way since early 2020. Went from almost 2-sides of an aisle full of rifle/pistol ammo to only the top 3-shelves of one side. Lots more shotgun ammo, but still less than before C. Only one LGS here and I got most of his better 'medium priced' .22 last Spring - SK+, SK Magazine, CCI-SV, Fed Champion 40gSV. Very little left of .22.