You are not the only one with this problem. When Intuit changed their pricing and services structure in 2015 a lot of people got angry, facing larger fees and having to go through an annoying upgrade just to get the same functionality (such as Schedule D, capital gains).
You have several options:
(1) Forget Turbo Tax and just use paper forms. That is what I do. Paper is reliable.
(2) Use forms mode in Turbo Tax. Of course, that may be even more complicated than simply filing out paper forms.
(3) Use a different service. If your income is below $64,000 the IRS has a free electronic filing service. Other online vendors have full taxes services for less than Turbo Tax.
(4) Add the amount to ordinary income. Technically, as long as you report the income, you cannot be penalized, so if you add the capital gain to your ordinary income, then you have paid taxes on the income. Even if they send you a letter, you can send an answer that you added it to ordinary income and that will satisfy them. Of course you pay a higher rate on your $26 if you do that.
(5) If you are in the 15% or below income bracket you are exempt from capital gains, and you can omit it. Don't believe the nervous Nellies who say the IRS will burn your house down if you don't report $26 in capital gains. Penalties are assessed on the percentage of TAXES you did not pay (0.5% penalty per month). Since 0.5% of $0 is $0 your penalty is $0. The IRS knows this. The IRS does not send out assessment letters for $0.
(6) Even if you are above the 15% bracket, there is likelihood it is still a no-tax situation (see 5 above).
(7) Worst case scenario: you are making a million dollars per year and you omit your $26 capital gains from your return. The IRS will send you an assessment letter for about $10. You can then send them a separate check or money order to pay it.
In all honesty I have omitted documented tax items, like taxable interest, that the IRS knows about many times and never gotten an assessment letter. Once I made a serious math error on my return and they sent me an assessment letter, which I just paid, end of story. And that was for a lot more than $26.
The technical verbiage for something like this in IRS lingo is CP-2000, underreported income. As you can see from this official IRS web page, basically what they do is guess how much they think you owe and send you a bill. Then you pay it. If you do so in time, you don't even get a 0.5% interest penalty on your $6.75 owed or whatever it is.
(8) Go hog wild. As long as you are risking an assessment on your $26, why not go hog wild and just let the IRS compute all your taxes for you? Make a copy of your income statements, then mail them to the IRS with a letter that says, "Hi, I am Mr. Odinson, my SSN is XXX-XX-XXXX. My address is XYZ. I am unable to compute my taxes due to a confused state of mind. I am hereby requesting a tax assessment for the 2016 tax year." Make sure you sign and date the letter. In all probability they will compute the full assessment and send you a bill (or refund).