I wanted to pass on how I have been able to find some good gear on Craigslist. Instead of looking through a particulat area or city, I google "craigslist". The first entry has a search box. There I enter what I am looking for I get results from around the country; some are old, some don't make sense, but I have found good deals on Montbell, Western Mountaineering and others.
Maybe everybody already knows this, but it has helped me.