For reference, $1 in 1970 would be about $6.55 today.
Milk: $1.32 per gallon
Eggs: 60¢ per dozen
Bread: 70¢
Bacon: .85-.95¢ per pound
We pay the same or less than we did 10 years ago, thanks to the Aldi, Costco, and Winco that opened within a few miles of our home. Assuming those were 1970 prices, we pay 68¢ for eggs (only 8¢ more!), $1.29 for wheat bread, but $3.39 for bacon. We stock up on sales like 39¢/# apples ($1/# 10 years ago), and $1/# pork loin special at Costco.
We used to do all our grocery shopping at Walmart, but they are now high.