But then you could also buy your coffee at costco, and a nice flask, and you get your cheapest caffeine every day and less disposable cups going to landfills.
You could also live in a country where you could grow and roast your own coffee beans. There is always a price vs convenience tradeoff.
Though, another point worth mentioning is that coffee's stimulant effect on the body wears off after a while as the body learns to adapt.
Which is great reason to kick the caffeine addiction habit in the first place.
Some athletes will give up coffee so that their caffeine gels are a bit more effective on race day.
There was an Australian Modern Pentathlon competitor who was sent home from the 1988 Soul olympics due to excess caffeine levels (but was later cleared).