I've been doing all my live trading from an IB account but I've also had an unfunded TOS account for a few years. I never switched to TOS because of the big commission difference. Now that I'm trading index options, I realized that my total fees are actually fairly high at IB. e.g. to put on 6 Road Trip Trades the total fee is $29.32. IB's cost breakdown per contract is: Commission0.70CBOE exchange fee0.44US regulatory fee0.04OCC clearing fee0.04Total1.22 From the TOS web site it looks like there's a $9.99 ticket plus $0.75 per contract. Is that it? Or does TOS pass along all the fees like IB does?