I don't see anything on that build that is "high end". The upholstery is nice. But every other mechanical part is stock, or simple aftermarket. Bordering on the "done on the cheap". I don't see a battery hold down (maybe a base clamp, but those are not original and I don't see any sign that the builder has enough creativity to do that). It is a basic grant steering wheel, the easy pick from the catalog, there are better wheels if you want to do any searching for them, and keep the vintage look. Why does the chrome T-handle shifter not even have a boot around the base? M/T wheels are also another easy find. While nice to see nothing stupid like a set of 24s (that would have cost too much) there is nothing high end about specing out a fairly low cost wheel option. Add a coolant recovery tank, good. But nothing special or high end about just plopping it right in the middle of the wheel well. At least tuck it in the corner a little cleaner, run a nice hard line along the core support, around the battery, and back to the tank. Not a length of rubber hose doing a loopy thing hanging out in space. That was the easy install, how I would fix it after limping into the parts store parking lot. Not how you do a custom build. Why do I only see half a seatbelt?
Have to give some credit to the photographer. they did a real good job angling those shots to hide as much as possible while making what is presented as pretty as possible. I have a feeling that photo shoot was a challenge for them.
I never saw the restored version. But if it was anywhere as close as what people have described, I am looking at a lot of money spent for a negative gain. The owners are probably happy (unless they read this).
The builder was probably very happy. Looks like they made a fat profit. Not having to do rust repair (lots of work with little to show in the end). Just take what is basically a new car and throw a handful of catalog items at it.