Most of my experiences have been really good. There have been no-shows of course, but they all seem to live in Saskatoon. Never had a no-show in BC.
I was selling a tank and stand a few years ago. I think it was $250. Guy says he's coming to get it "right now". Two hours later I give up on him (I don't have his number) and leave the house. An hour after that I get a call from him (he had my number from the ad) and he's ****ed off that I'm not home!

I tell him I can be there in 15 minutes. So I get back home, and there he is all ****ed off telling me he's going to be late something. He hands me the money, I count $200. I tell him there is only $200, the tank is $250. He says that he thinks it is over-priced and he's going to give me $200 for it and he didn't bring any more than that anyway. I told him to go F his hat (literally). So he left. The next day he calls me and offers $200. I told him due to over-whelming response to the ad I have raised the price to $600. He didn't call back.
Someone came over to buy a $10 frag. I am getting ready to bag it up and then he says oh jeez he only has $5 in his wallet. So I snapped the frag in half and said here ya go! He didn't know what to say, but he took it for the $5. I laughed pretty hard. I would have been nicer, but this guy had already *edit* me before.