In the past 25 years ive been an avid coffee drinker, its rare I’ll be at a diner and look at the price of coffee. It should be between 2 and 4 bucks (for a good cup, like local roasted).

Now if they go and get the same cup again tomorrow, thats on them.

Not defending the price of a cup of coffee at all, but as someone who roasts their own coffee (both cause I love the process and am a cheap bastard), its only fair to point out the price of green beans is almost exactly double the price it was 3 years ago.

Again, plenty of ways to slice the astronomic price, but at the end of the day I would only half blame the restaurant here on the mark up

https://www.macrotrends.net/datasets/2535/coffee-prices-historical-chart-data