This guy is awesome. He's on the expensive side, but you should be able to make the investment back in no time. He has got a rigid system that generates about 10 trades per day, with an exceptionally high winning ratio. The system can also be applied to any liquid market.
you should check out Trademaven. They're offering competitive rates and low margins. As low as $500 according to their website. I'm guessing you'll have to trade a while and develop a track record to get those low margins.
Careful of Transact. Their infrastructure is very unstable.
Trademaven had some issues in the past. I think it was back in January. All of those issues have been resolved. The reliablility of the feed is as close to perfect as anyone could reasonably expect.
I have has zero issues in the past six months. Except for my internet going down, which...