What percent of the overall purchase profit is 10 cents, and how much does it reduce in sales by adding friction? Surely there must be data on this, has nobody looked into it in public?

Also, it’s been awhile but don’t plastic bags make it easier to carry more things at once because the handles are so thin and flexible? And I don’t remember handles ever ripping on plastic grocery bags.

If the math works out in favor of charging for bags it would imply that the margin is incredibly thin in the literal sense of the word incredible. Like the average purchase has so little profit that 10 cents per bag is meaningful? What is the average profit on a bag of items or on an average purchase? Surely more than 10 cents, no? Like I know grocery stores are notoriously low margin, but that’s among businesses it’s not almost 0 in an absolute sense.