Re: Used Photography Equipment
If you look toward the bottom of the main forum page you'll see a section marked "The Marketplace." That tends to have a lot of gear that people are selling. I don't know how updated it is as I haven't checked it out in awhile.
that's probably your best bet, at least on the forum. Other than the forum I would suggest finding a camera store in your area that may have used equipment. The one near me always has good stuff, and I've gotten a couple of things such as filters extremely cheap just because they were used. (and I'm talking $30-$50 filters new for about $10, with no scratches or dings that I could see on them.)
Best of luck on your equipment search. What equipment are you looking for?