And in true Ford tradition, there could have been some hype in there. The plane was very conventional for the day, tube, stick and fabric. Requires building techniques that don't favor mass production. As far as building one for $20k today using mass production techniques, if it were made from aluminum just the aluminum stock would run somewhere in the neighborhood of $5k. Add stamping cost, assembly, engine, prop, some instruments, upholstery and paint, which is what the average consumer would demand and $20k is but a spec in the review mirror. To build the plane today would most certainly require modernization (and improvements) as the originals had several shortcomings. I always ask this question: Who wants to fly a plane that's not any fun to fly?