I've bought and sold lots of stuff on Kijiji too, but never event tickets. It's fine for physical items when it's easy to verify (eg: I'm selling a BBQ, people can come and look at it and see it works, then they give me money and I help them load it in their truck). Tickets? I'm always super leery if I didn't buy it myself directly from the source. I've seen a number of scalping deals go bad. DON'T BUY TICKETS FROM SCALPERS KIDS. And if you buy tickets at or below face from people selling, try to verify any way you can that the tickets are legit.