State returns are additional with all of the online versions of TurboTax.
The desktop (installed) version of TurboTax Premier includes one free state return.
Here are all the online versions and prices. It says State Additional under each price. Click on State Additional to see the price.
https://turbotax.intuit.com/personal-taxes/online/
How to see your fees
https://ttlc.intuit.com/community/charges-and-fees/help/how-do-i-review-my-fees-in-turbotax-online/00/26353
For help with fees
https://ttlc.intuit.com/community/charges-and-fees/help/what-can-i-do-to-reduce-my-fees/00/26051
Do you need to see the way the fees are displayed on the TT site? Note that it tells you that state is additional with online Premier:
ONLINE 2020