I think they are priced used just due to name, they don't have the Kuhn, NH or Deere rep. Most people around here have Kuhn. I researched rakes a couple of years ago for friend and we both felt the miller pro was the way to go. He wanted at the time to get a rake that could be connected together with another and the miller pro at the time had the best set up. We demoed one (2 set up in tandem) for a week and loved them. We compared it to his current Kuhn single and it seemed to be every bit as good.
At that time he decided to sink money into another part of his operation, but down the road that is what he would like to buy. Miller pro in the time since we have looked was sold to another company, but I don't see any change in the rakes.