How low can it go? Gas prices may fall even more By: CNBC.com News November 28, 2014 at 15:31 PM EST OPEC may be trying to cause pain for U.S. shale drillers, but it's providing a gift to consumers, with a 25-cent drop in prices possible by Christmas. Read More >> Related Stocks: iPath Dow Jones-Goldman Sachs Crude Oil Fund