It
is possible that you may have added an add-on that required an
extra charge.
To see a breakdown of your charges, please follow
the instructions in this FAQ
https://ttlc.intuit.com/questions/2565973-how-do-i-review-my-fees-in-turbotax-online?jump_to=answer_...
As long as you haven't paid, registered, or deducted
the TurboTax fee from your refund, follow the directions in this FAQ
to remove all unwanted add-ons.
https://ttlc.intuit.com/questions/1901213-what-can-i-do-to-reduce-my-fees?jump_to=answer_3301994
Also, if you elect to pay your TurboTax
fees with your refund, there is a fee for that as well.
https://ttlc.intuit.com/questions/1900596-what-is-the-refund-processing-service?jump_to=answer_3301372