IB has been the best broker and still is. Even if you trade less so your commission is less than $30 per month then you will be charged $10 per month but if you consider the saving in commission, that $10 is nothing.
If you trade 2 contracts with premium of over 0.1, you will pay 1.44. For lower preminums , like 5 cents, the commission goes down to much lower.
If you add liquidity by your order, you get some rebates. I have done trades on Nasdaq and I was paid instead of paying.
No excercise or assignment commission in IB.
Margin rate is about 1.2%. Please find another broker that has similar rate.
TOS is a good broker but IB is the best. TOS is Maddison garden, IB is heaven.