I buy mostly online. New: The Knife Connection, Knife Center. I buy used rom AR15.com> Equipement Exchange>Blades. I have never used Bladeforums knife exchange, but i see a lot of good knives on its knife exchange. I have bought a couple from Bass Pro Shop.
My local Walmart has a few nice Gerbers, Kershaws, CRKTs and Bucks, but i just don't see any i that really jump out at me. All good knives, but they are just not what i need.