I think you're thinking of this from the wrong perspective. To me, an extra 75 cents don't really matter. I'd pay it without blinking.

But to many people in the US, going from $1 to $2 would literally double their expenses for the month and hurt an already tight budget.

"Kyle Dishman can’t afford to shop at the local grocery store anymore. Instead he goes to Dollar General, where he can make $40 stretch into a week’s worth of groceries and the occasional can of motor oil for his Chrysler 300."

If you went from $1 to $2, all of a sudden Kyle only gets to eat every other day. Half of all shoppers in the US buy groceries from a dollar store, and they aren't doing it because the Dollar General has the freshest produce in the area.

Sources:

https://www.washingtonpost.com/business/2021/08/20/growing-n...

https://www.mashed.com/224027/think-twice-before-buying-food...