Coffee, which, after natural gas, represents the most exported raw material out of the total world value of exports, could be considered the colonial good par excellence. Everyday millions of people spend 165 million dollars to buy it, while for over 25 million farmers, scattered between Central and South America, Africa, Asia and Oceania, coffee is the only source of income. Such a situation exposes farmers and their families to a considerable risk, not only because of the meteorological events and the voluptuous nature of coffee consumption but, above all, because of price trends on the international market. In the following paper, coffee margins fluctuations (the difference between the price charged by coffee's final processors in the retail market and the price of coffee exported from coffee-producing nations) will be analyzed in detail through a robust econometric model set up in the article “Coffee price dynamics: an analysis of the retail-international price margin” by Ghoshray, Atanu, Mohan, Sushil.