I would not sell FTF even if you have LTCH. A FFL transfer at a LGS is the only way to do this. I would feel terrible had I sold a handgun or riffle to someone that showed a LTCH and was revoked or fake and the gun was used in a illegal manner. The usual $15-$20 transfer fee is worth a piece a mind that I did everything I could to keep guns out of criminals hands.
And that is a perfectly valid opinion.
Rarely do I sell any gun, are rarer yet to someone I don't personally know. Have I done it? Yes. But only after sizing them up to the best of my ability.
I have 4 guns for sale now, all 4 are guns I don't use. None are here on INGO. 3 are going through my favorite FFL. 1 is going to another FFL that I've had prior dealings with.
We each make our own choices.