[calling all cars]

It's not a percentage. It's 4 cents per contract. You buy or sell a contract at 20, 50, or 75, it's 4 cents per contract to settle.

Each contract works in increments of 10 dollars. If you buy one contract at 40, you are risking $4.00 to win $6.00. The fees mean you are risking $4.04 to win $5.96.

If you set the price of the contract and someone else takes your price, you pay no other fees. If instead you agree to pay someone elses price, whether it's to buy or sell, you pay an extra 4 cents per contract (2 cents if the contract is trading in the range of 0-5 or 95-100).

Does that help?