Meh. I've had that with CL lookers. The couple I've had were looking for "uneducated" owners or relatives where they could offer to "tow it away for no charge". Yeah, right. One even said the cops were issuing tickets and towing any old car without current plates and insurance, and he would solve that issue for me. That's another reason I try not to keep cars out in obvious sight, as 'hunters' will stop and play stupid with me, then leave all pissy when they quickly find me playing stupid back... LOL.
On that note, my favorite CL seller was a guy with an "original 351CJ torque converter" for $200. He was close so I stopped-by and immediately saw it wasn't. He absolutely insisted it was (I've been doing this for 50 years!) and that it was actually worth $800. "I wouldn't sell it to a moron like you anyway." Oh... OK, thanks, bye.
So I go grab the identical one I had from a Bronco II and was back in 20 minutes. I pulled-up and said "Hey! I have this one just like yours - and I'll let you have it for $100. You can double your money!" He put his next to mine and looked it all over for a couple minutes, then he went to his house and slammed the door. LMAO. Gotta love it when you can bitch-slap the jerks with their own hand.