Can you explain the charge of $79?

To review your fees in TurboTax Online,  

1. Open or continue your return.
2. On Tax Home, select Start or Continue to enter your return.
3. Select Tax Tools from the menu, and then Tools.
4. A Tools Center box will pop up on your screen.
5. Select My Fees.

If these steps don't work (for example, on your mobile device), go to Tax Home and open the Finish & File section. From there you can review your orders, purchases, and fees.   You can remove PLUS from your order as long as you haven't paid or deducted your TurboTax fees from your refund yet.