Turbotax wants to charge me over $100 just to file my taxes? It says this is for the option of filing state? I expected to pay $20 or $30 tops. It was advertised for $20.

Don't know where you saw that price .... 

The Online Deluxe is $65 for the fed  + $45 for the state = $110  and efiling of both has no extra fee.  In the FILE tab step 1 read the screen again. 

https://turbotax.intuit.com/personal-taxes/online/

$20?  No.  You may have seen $19.99 for PLUS.  PLUS is not the software to prepare a tax return; it is an add-on feature that gives you access to previous returns and access to phone support.

Major tax reform and major changes in the tax forms have also resulted in changes to the tax software.

WHY DO I HAVE TO PAY?  I WANT THE FREE EDITION

The information that you can enter in Free Edition is pretty limited now.  Thanks to the new tax laws, there are no more simple Form 1040EZ or 1040A's.  Everything goes on a little “postcard-size” Form 1040 that has six extra "schedules" with it, and if you need any of those schedules, you are not able to use the Free Edition.  Using the standard deduction instead of itemizing does NOT mean you will not need any of those schedules.

https://www.irs.gov/forms-pubs/about-form-1040 

If you qualify to use it, there is another free version of the software:

Try Free File: 

You qualify if your income was $34,000 or less, or $66,000 or less if active duty military, or if you qualify for Earned Income Credit

https://ttlc.intuit.com/questions/1900583-what-is-turbotax-free-file-program

• https://ttlc.intuit.com/questions/2026912-how-do-i-switch-to-turbotax-free-file-program

https://ttlc.intuit.com/questions/4511011-what-happened-to-the-1040a-and-1040ez

Note:  If you do not qualify to use Free File then you will have to upgrade to Deluxe or higher in the paid versions of the software.

Why turbo charging me 100.00