When I see ads like that, from people like that, I don't even bother inquiring.
Not the kind of people I want to deal with. Life is too short to put up with that kind of drama.
Bottom line, if you want to act like a crusty old jerk, you can keep your gear, and I'll keep my money.
Because if it's an item I really want, I will look elsewhere. Used radios for sale are kind of like waiting for a transit bus. If you miss this one, don't worry, because there will be another one that comes along in a little while.
Don't get me wrong. There is nothing wrong with buying used gear, or buying it from a private individual. But there's a bit of an art to selling used gear successfully as a private individual. In order to close the deal, both parties have to work together to make it mutually beneficial. There's a bit of give and take involved from both sides.