Oil price fell below $50 Yesterday, after some calm in the oil market, when quotes fluctuated at the level of 50-55 dollars per barrel during the week, the price broke through the most important psychological mark. During the trading session on the New York Stock Exchange, the cost of a barrel of WTI oil fell below the 50-dollar mark for the first time since January 2007, and at trading in London, Brent oil fell below this level for the first time since May 2005.