If you have a jointer, planer, table saw and a miter or chop saw you can easily turn rough Spruce into the parts for the wings, not sure how many dollars it saves tho. Just make sure you can select the wood and find a nice tight vertical grain.
Yes, the prop is not a problem, and i'll be making them for years to come. Just make sure you plan ahead, i'm usually 3-4 months out on deliveries.
I've been enjoin Reklaw for a few years now, usually spend a night of two, Great fun and Great people.
If you get down my way youre welcome to visit.