I understand the comments about it being CL and that we should accept that people are d-bags. BUT, flea market or not, there are still some basic courtesies as people that everybody should be able to abide by. If somebody is going to jerk me around or tell me one thing then do another you're damn right I'm going to be pissed. Especially if I had to drive an hour to find out that they jerked me around.
If I went to a flea market and said I'd buy something and the flea market seller said meet me around back and you can pick it up. Then I go around back and he's not there and I find out he sold it while I was on my way around back I would probably be more pissed than I have been at anyone on CL.