The most expensive coffee in the world

You may think that the most expensive coffee in the world is from South America countries. It's wrong. It's from Sumatra island, Indonesia. According to http://most-expensive.net/coffee-in-world , the price of the coffee is $600/pound and up to $50 per cup. Sumatra is one of the most fertile islands in Indonesia that not only produces coffee, but also rubber, cacao, etc.