the price haggling has never bothered me too much. i sort of expect it. what really sucks about CL is how often the people don't show up or don't call after you've scheduled time to show them the bike.
I had a guy come out, make an offer (which i accepted), and then tell me he's going around the corner to get money from the bank. during this time, i called a few other people to tell them the bike had been sold and not to bother coming out and meanwhile the first guy just never came back with the money. urg.