There is no additional e-filing fee in TurboTax Online for either a federal or state tax return. The fee you're seeing is for the tax preparation program(s), and the fee applies even if a return is filed by mail.
*** I am NOT a tax expert. I am a seasoned TurboTax user, and volunteer to provide assistance to TT users. Nothing I post is to be considered TAX ADVICE; I bear no legal liability for responses.***