I remember buying 550rnd bulk bricks of Federal 22LR for 19.99 at walmart.... I miss those days. Used to run a 550rnd brick of 22lr through my 10/22 every weekend......
BTW, 5,000 rounds in 50 rnd boxes fits just perfect in a USGI .50 cal ammo can!
I still have a few CCI blazer bricks I bought for under 10$ probably 15 yrs ago.Rummaging through my closet I found a brick of Remington's marked $9.99.