Did you end up in a paid edition? The charges (or free) depends on what edition one ended up using. It's possible you either started off in the wrong edition, or perhaps you started in Free Edition but had to upgrade due to something in your return that Free Edition cannot handle. The Free Edition is only for very simple returns--a Form 1040 with no additional forms/schedules other than Earned Income Credit, Child Tax Credit, and Student Loan Interest.
If you think you meet all the qualifications for Free Edition and don't think you need Deluxe or higher, and if you haven't already paid, you can downgrade to Free Edition (second FAQ below). But if there's something that Free Edition cannot handle (see first FAQ below), it will ask you to upgrade again.
FAQ: Why do I have to upgrade from Free Edition?
https://ttlc.intuit.com/turbotax-support/en-us/help-article/change-service-level/upgrade-free-editio...
FAQ: How to I downgrade to a lower priced version of TurboTax Online?
https://ttlc.intuit.com/turbotax-support/en-us/help-article/change-service-level/downgrade-lower-pri...
