Most customers will spend over $100 on a cart... more like $200-$300. So, the net profit is $1-$3 per customer. That's net profit... after expenses and taxes.
It used to be more like 2-3% until the late 1970's, but labor costs drove it down to the 1% neighborhood. It's all about volume in the supermarket business.
Lol! You’re right. Been a looong day. Wasn’t thinking.
My son worked at a grocery store and pointed out that some 30 percent of their sales was in booze. They have a much higher margin on non food items. It’s almost like the food is a lost leader.