I am going to try to figure out a price point on this. A lot has to do with the servo, the alco switches and the price of the board. The board will be cheaper the more I order, I just don't want to get stuck with a bunch of boards and no one buying the kit.
I will be ordering the rest of the parts I need to finish the layout of the pc board this weekend. Once those parts come in, I will be able to finish the CAD drawing for the board and see how many people will be interested in the first run. The first run may be a short one, maybe 5-10 kits, if there is enough interest. If people like the kit and I get enough positive feedback once its in peoples' hands, I may decide to make this permanently available.