Right now nothing is "up". I have had people come to me after hearing that their walnut trees are worth a fortune and walk away disappointed when they hear the other side of it. A mill has to be willing to take them, after you pay to have them hauled there. The sawyer, or mill employee will go over each of them with a metal detector. If they find ANY hardware, they won't touch it. If the logs are striaght and good quality without splits, rot, or blemishes, the sawing charges start adding up. The boards have to be dried and stuck, somewhere where they can lose enough moisture to be lumber quality either in a kiln or after a year or more in an open drying shed. Now they just need to find a buyer that is working on a high end project that is willing to buy this particular walnut over all the other supply that is already sitting out there.
I know this seems harsh and I don't mean to hurt anyones feelings, but be prepared to sell it by the cord as firewood. I know it looks beautiful and the color of the heart wood is great, but the reality of getting anything for small loads of walnut is very slim. I hope you prove me wrong, and I hope you come back and share a success story with us, but just be prepared....