Guest post: how to save $10,000 with a thermos flask

Since I am not a morning person, I need my daily intake of caffeine. So like lots of my fellow commuters, buying coffee at a station kiosk used to be part of my daily routine. This changed when I realised how much money I could actually save using a simple thermos flask. Coffee around the world Let‘s first decide on the price of coffee. This obviously depends on where you are, and the type of coffee you drink. A Frappuccino in Oslo will set you back more than a caffe in Naples. According to the coffee economist (yes that website exists), the average cappuccino sets you back...

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