Earlier quoted context omitted.
The food/drink part could be the most of it. A Google employee enjoying free food and drink could save $60/day versus buying prepared food ($10 for breakfast, $20 for lunch, and $30 for dinner). If you drink much coffee or other beverages, that could be another $15/day. If you weigh this against spending an extra hour or two commuting, then it looks like a lousy bargain. But if you are like many people, and ended up…
Jesus Christ. I eat well and spend maybe $400 a month on groceries and food. I’ve heard that Google recruiters attempt to con potential employees into some ridiculous assessment of the “free” food as a compensation benefit with numbers like those that you posited above. I can’t imagine valuing daily meals that highly.
Buying raw ingredients and cooking them yourself is cheaper in terms of explicit dollar costs, but if you don't enjoy cooking then you also need to assign some monetary value for having to do something that you don't like.
I think I would enjoy taking a break and cooking so free food is probably not worth $60 to me personally. It's not crazy to think that my employer gets a benefit of more than $60 through increased productivity by providing me with free food though.