Quote from webbma:
so a very conservative all in rate per side would be 2.50 approximately ($1.14 exchange fee and 1.20 brokerage)?
Quote from Chriz:
This link gives you an idea about the exchange fees. For a calculation of the total cost you would need to add your brokers fee.
http://individuals.interactivebrokers.com/en/accounts/fees/CME.php?ib_entity=llc