In my work I sometimes have to do with charter flights. Airlines lately frequently charge (in my eyes ridiculous) fuel surcharges based on certain fuel prices. They usually use "Platt" or something or "Barges", which mean nothing to me, to base the increase of fuel price on. I would like to check the fuel prices they claim. I tried to find prices on internet, but I can't find anything. Does anybody know where I can find actual fuel prices on internet and how they go up and down? Is there a site somewhere? Right now I am interested in fuel prices in a few countries in South America. Can anybody help? Thanks!