If it's just the visual model that you're concerned with I doubt the 'foil section is that important right now: it should be possible to give a good approximation based on visual references. Real aerofoil data are, of course, a different matter. I certainly agree with CaptainG37 though: I've spent in excess of €400 on documentation for a project I'm involved with, not to mention real-life sim access, access to real aircraft, etc. I'd guess research and flight testing (in X-Plane) will have taken at least ten times the amount of time building the visual model took. Maybe more.
