I had an interesting idea. Say a supermarket had a drive-thru window. You could pull up to the window, request an item, and one of the employees would fetch it for you. But it wouldn’t be free. It would cost maybe 50¢ extra to get it from the drive-thru window. This would be ideal for people who were going to the store just to get one thing, like toothpaste, toilet paper, a box of cereal, or whatever, and really didn’t feel like parking the car. You could order multiple things at the drive thru but the price would keep going up with everything you ordered, maybe by exponents or something. (Not just 50¢ per item.)
Could they make a profit this way? From people who just want one thing and don’t want to park? Or would the cost be offset by the number of people who would have otherwise walked into the store to get their one item, and then be motivated to buy more stuff impulsively, who would have never walked into the store if there was a drive-thru window?
Is there any way to make a drive-thru window at a supermarket profitable?
ETA: let me clarify, I am not talking about a drive-thru only store. I’m talking about adding a window to an already-existing conventional supermarket.