According to dictionary.com, arbitrage is “the simultaneous purchase and sale of the same securities, commodities, or foreign exchange in different markets to profit from unequal prices.” Over the past two weeks, the price of gold in Shanghai, China has been selling at ~$2,000, which is about $100 higher than the spot price at $1,900. This is not common. That means that people could be buying gold in the West and selling it in the East at a profit, moving gold to China. He who has the gold makes the rules. The world speaks English for a reason.