You can pay early before filing to lock in the current price.
How to pay the fees
https://ttlc.intuit.com/questions/4296537-how-can-i-pay-for-my-turbotax-online-fees Or you can say you want to print and it will make you pay first.
1. If you're not already in your return, sign in at TurboTax.com and then select Take me to my return.
2. Select Tax Tools and then Print Center from the left-side menu (on mobile devices, tap in the upper left corner to expand the menu).
3. Select the first option, Print, save, or preview this year's return and follow any additional onscreen instructions.