Is there a chance that you qualify to use Free File instead of online Deluxe--which is what you are posting from--and which will not work if you are self-employed and need to prepare a schedule C?
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 that began for 2018 returns, there are no more simple Form 1040EZ or 1040A's. Everything goes on a Form 1040 that has three 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://ttlc.intuit.com/questions/4511011-what-happened-to-the-1040a-and-1040ez
https://www.irs.gov/forms-pubs/about-form-1040
If you qualify to use it, there is another full-featured free version of the software:
Try Free File:
You qualify if your income was $36,000 or less, or $69,000 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
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.
Online Deluxe $60 State software $50
Or—-Use this IRS site for other ways to file for free
Wait---I just noticed you are asking about an amended return. You should not have a fee to amend unless you had to upgrade to amend. What version of the software did you use to prepare your original return? You do not pay to amend unless your amended return requires a higher version of the software--and then you only pay the difference between the original fee and the fee for the higher version.