Option trading commission is $0, per contract fee is also $0.
Option trades may be subject to regulatory agency passthrough fees. The fees will appear on your confirmation as follows:
Option Fee
Options Regulatory Fees charged by Options Clearing Corporation on the buy and sell side of the trade.
Fees
SEC fee placed on the sell side of trades (Sell open and Sell close).
Index Option Fee
CBOE fees for Index Option trades.