One of the places I worked, I remember talking with the admin. She was responsible for ordering food to keep the kitchen stocked. It was a few coffee machines, and a rack full of snacks. No beer, no drinks. IIRC she said it cost something on the order of $50-75k/year, and this was for an office of maybe 150 people or so.
I guess that amount of money is small compared to some engineers' salaries but I was surprised by how expensive it was for coffee & snacks.