Tell him 600.00 plus you will help them move, sounds like a good sign. A few years back there was a Washington Chief at an antique store (in WASH state) and you could see it from the Highway, it was about a 7.5 or 8 and they wanted 700 or 750 for it, should woulda didnt grab it..... still kickin myself !!! COL. I would think that the Washington one is a little more in demand than the Idaho version. If you get it Keep It , you probably only get one chance, I know I used mine up!! ....................... DODOGAS