When I was learning to fly in the late 70's the big trainer in my area (up in Michigan) was the Balsa USA Swizzle stick. It was actually lighter and flew better than the Original SIG Kadet of the time. You could order it from Balsa USA for $13.95 as opposed to the going $50 price tags on the kits then. I've noticed that Balsa USA still sells a more modern version of it...but I've never seen or heard of anyone flying them...if you ever want to get your feet wet on building a simple balsa kit, that would be it...at least it used to be.