Fit and finish. If it has obvious utility, to even a fraction of the public, and you can post performance information in the driver's side quarter window, why wouldn't the resale value go up over one otherwise equivalent?
This is Polymetal. It is most famous for being the cladding on the Grenfell Towers [inferno], but it is available in every town in America for signage. These samples were formed by hand with an 18" lever arm. It costs ~50% more than plywood, but is equivalent in stiffness to 5/8" plywood, and most importantly —it's prefinshed.
It's all down to using very clean rollers for that street/show level of finish. And that red area is definitional
You can scallop the back edge to be up-to-date.