[jacquesm]

This is pioneering work, saving money in material and fabrication costs is something that will happen in the longer term when the tech is more mature.

This is a technology demonstration, not an example of super high efficiency. It also took much longer to make than it would have taken to make it in a more traditional way.

That said it still came in rather competitive compared to the alternatives, which says quite a bit about how manufacturers of such structures normally charge.