1,000,000 barrels sold for $20, when the private market default sale price is $60 on Express. 1,000,000 barrels * $40 profit for private market resale = $40m free money for your start up. Of course you need over $20m cash onhand already to buy it all by SO, but that definitely looks like cheating. The catch is that it'd be rational for EVERYONE to have SOs around $50-55 for oil barrels so it's hard to know for sure if the person who bought the barrels was cheating. The obvious solution besides looking into the account owners here is setting the oil autosale price at $60.