You can sign into your TurboTax and check your fees. Here is the link to use if you have not filed yet. How
do I review my fees in TurboTax Online?
If you have already filed, sign into your return and scroll down to 2018 >> View Order Details, see image attached. Make sure you are on the Tax Home tab. This will show you a breakdown of your fees. You can also check your email around the time you filed as you would have received an email with detailed order information also.