Try looking here for some idea of pricing. You can even set it for a certain mileage from your zip code. Around me yours may be worth around $30,000 to $40,000, Northern IN.
What part of Northern Minnesota are you fromIJ At first it seems really low but then I was to the New Holland sale in Granite Falls and the 96's only went for a little more than that. You can check out the adds. Private sales are closer to reality than dealer sales, a lot like used pickups. I think that you would be better off advertising them yourself.