My mother used to go for groceries once every two weeks for 4 people.
It would cost about $80 in the 90s. I know this because she always saved receipts where she saved a lot on the total (back when sales were actually sales and not markups in disguise).
My grocery trip for one for two weeks is over $200. And I’m extremely frugal about it (couldn’t tell you the last time I bought meat, eggs, or butter, but easily over a year ago cuz it’s too expensive) something she wasn’t.
We were always poor, but that means something entirely different now..