I have a Dogtra 2500 T & B single dog that I keep around as a spare. I would part with it I guess (new batts last fall). Whats it worth to you? This is a really nice collar. I switched to Tri Tronics Pro 500 multiple dog.
I have a Tri Tronics upland G3, as good as brand new. I bought it a year ago from Cabelas, had out of the box, but never on the dog while hunting. There's not a scratch or marrk or anything on it.