Two that got away (well one did, the other was a waste of time and gas money)...
First was a 1967 Impala....EXCELLENT condition. Had a 350 4bbl, TH400 and many go fast goodies. The price? The... price.... :'( ....$2,000. I was SO PISSED because I gave the guy a $500 deposit and said I'd be back the next day. He shows up TWO hours after I gave him the deposit to bring me the deposit. Why? Three people showed up after I did and got into a price war. He ended up selling it to one of them for $8,000. Needless to say I yanked my money out of his hand, chewed him out and slammed the door.
The second was a 46" Samsung LCD TV that was on craigslist for $10. The problem with it was the lady upgraded to a bigger one and couldn't find the stand to the old one, so she figured it was worthless. Upon showing up to get it, her husband was carrying it out of the house and dropped it....busted the screen all to heck. :O Most worthless 60 mile round trip ever.