Just for fun, here are my numbers rounding things up for fun with current prices... Milk 5$ for 2 litres, decent coffee usually around 20$ for 350 grams, water

Just for fun, here are my numbers rounding things up for fun with current prices... Milk 5$ for 2 litres, decent coffee usually around 20$ for 350 grams, water filters 100$ a year, machine 5k good for at least 20000 shots (based on my last one that lasted more than a decade). The price of my cappuccino comes to around 2$ cad. This is of course based on low volume and little over head. Of course if I would add utilities and space it would be higher such a businesses do - but it's a decent reference based on more than 20 years of doing it.