It's hard to answer this question except to say that Intuit only offers the free version for very basic taxes. If you look at https://turbotax.intuit.com/personal-taxes/compare/online/
For the deluxe version, it says "start for free. pay when you file" (sigh)
They are double checking that you need that version and a higher or lower version of the program so that they don't over or under charge you.
Sorry you have encountered the TT charge you at the end frustration.
PS I do not work for TT.
Good luck & Peace be with you.