I have never sold a pin on CL but I have sold plenty of other items. It seems everyone always wants to negotiate a price on the phone. I will not do this because they just consider it the new asking price and want to talk you down further from there. My policy is first $$$ in the door gets it because there are lots of flakes and no shows out there. I will not give an address until they are ready to come out and I would not have 2 driving at the same time.
I did have a guy pissed at me one time over a car. Spoke to me at noon and told me he wanted to buy the car at 6 (he only saw pictures) Calls back around 4 says it will be more like 8. In the mean time another buyer wants to see it at 5 and I sell it. He was so pissed when he called back at 8 telling me how he made all these arrangements etc. I had no guarantee that he would take it so why should I hold it?