One of the most well known antitrust laws examples is Rockefeller’s Standard Oil. Standard Oil dropped its prices by more than half and then bought up several competitors. As their market share grew, they were able to lower production costs and prices even further while still increasing the profits. They then bought out several refineries that were unable to compete successfully. However at the time of the trial they owned only 64 percent of the market share and there were 147 other domestic competitors in the market.