I don't really have a place a regularly shop for collars at. Usually I get my collars from the smaller petstores in my city (Paws mainly) aswell as 3 Dirty Dawgz, K9 Collars, and Earthdog. If I can avoid shopping online though, I generally do. A lot of my collars and leashes have come from different dog shows I've gone to also. I can't stand aluminum dog tags because they don't last overly long, so I buy stainless steel or plastic ones from either Lucky Pet (I've also bought an embroidered collar from there, before I discovered "K9 collars"), or Boomerang Tags.