Yeah, coffee is crazy expensive when you look at how much shops charge you for a drink. It costs about $1.33 per day for the 20oz of coffee I make for my wife and I. Really not bad considering if we were to both go out and buy a coffee everyday it would be around $10.
And it is a good practice indeed. I think deep down my comment history here one can find that I found it strange that someone would pay a lot of money on an annual basis for coffee out of the home.
That said I also think that it is not bad to be able to spend money like that. Not about the money itself, but the mindset required to spend. It must require a very pleasant way of life to not want to save all money, like in case of emergencies or saving up so you or your kids can go to college.