Here’s a snapshot of the cost of groceries just before World War II, from the Pittsburgh Press, March 28, 1941.

These prices look low, but there’s been a lot of inflation in the last 80 years. According to this inflation calculator, one dollar in 1941 was the equivalent of $17.89 in 2021 dollars.  When you multiply all of these prices by 17.89, most of them stop looking like bargains.