Might as well build it, cost too much to copy. By the time you copy plans, buy balsa & plywood, then hardware, you will probably just break even or very little profit, plus a lot of extra time to cut out parts.
You will probably be dead before the value goes high enough, or your family would just dump it cheap. Just my thoughts. Just like others I have so many old kits I will never get around to build, but just cant part with. Its not costing me a cent to keep them.