I am proud to say that I will never have to buy .22 ammo again for as long as I live. Bought it about 10 years ago and my brain seems to think @ > 7 bucks a brick.
I found three boxes of Federal 500 round bricks I bought about 25 years ago that I had forgotten about. It still shoots ok in most of my guns although it is FEDERAL. I also found a few boxes of Winchester I bought at OTASCO many years ago. Digging around I found another 250 rounds of Remington that came in a coffee cup.
A month ago I bought 100 rounds of Remington I found at Walmart. They had two boxes of 100 rounds so I bought only one and left the other for someone else.
I always try to keep one box on hand after I had to chase of a dog 50 years ago with a single shot .22 and only ONE cartridge in the house.