You can see what you are being charged for at this link: https://ttlc.intuit.com/questions/2565973-how-do-i-review-my-fees-in-turbotax-online
Every charge has a disclosure page, you should not click "OK" unless you agree to whatever it is and the cost.
Turbotax Online is "free to start" but the final cost is determined by the complexity of your return, the forms used, and any additional services you agree to. $36 might be the cost for PLUS or MAX benefits, which includes Audit Defense, Identity Theft Protection, and a few other things. It was optional, did you agree to it?
