if you have 10,000, this will allow you to buy 2 contracts right, for non-members the margin is 4,000 right? If you shorted 2 at 84 and covered at 80 how much profit would you make on that trade? Besides the monthly nymex fee, how is the contract structured, can you give me an apples to apples comparison with the ym, where every point is worth 5 bucks per contract, how is the light sweet crude contract structured? How much is every point worth? Thanks.