I watched that film "Black Gold" recently on telly. I was shocked to discover how little the farmers get - a tenth of a U.S. cent per kilo. The price has plummeted since the ending of the coffee producers agreement many years ago. it is now set in New York. the Ethiopian farmers operated a cooperative, but still the price was at such a level that many could not afford to send their children to school and had very poor living conditions.
The film constrasts this with the amount people pay in cafes for coffee and showed the stunned faces of villagers when they found out.
The middle men and the big coffee companies make the money plus coffee chains of course. They also showed an international trade fair where Europe and the U.S. ruthlessly exploited their power over the developing nations - keeping them out of the key negotations, having armies of negotiators and resources vs. one or two representatives from poorer countries, and yet perversely and self-righteously claimiing the morale high ground.
Fairtrade is about 20% more to pay for the consumer, but it results in a fairer price for producers and a huge difference to their lives. It seems a small extra price for us to pay.