re: CL working better in urban areas. I wonder at what threshold this working better occurs. Ottawa is a difficult market. There's a fair number of people, but it's geographically huge, making it inconvenient. I found that when using local used websites like CL (kijiji, usedottawa, etc.), people around here tend to try to sell for for 95-110% of retail price, and want to buy for 20-50%. This is true for *all* items, from lenses to ice skates. It's to the point that I don't check these sites anymore. I once listed a semi-pro camcorder for 8 months before I got an offer above 50% of it's retail value. On the other hand I sold a 24-105L for 95% (took a month or two).

I'm not sure what the Canadian EBay market is like, but if it can shave off the months of waiting for a willing buyer, for a 5% cut in price, then it's probably worth it.