If there's so much money to be made, then they wouldn't be trying to peddle the idea to you. Believe me when I say this, Hipshot, factors such as "supply and demand" have already been factored into the price of the contracts long before these scam artists try to sell these contracts to you. The biggest money to be made here, is not by the person who buys the petrol/ oil contacts as a result of these advertisement, but by the person selling the contracts. The commissions are huge. If you don't know what you're doing -- and I mean really know what you're doing -- stay away.
I don't play the game.