If the most expensive swords in the world are made in the exact same way as the least expensive swords in the word, that is interesting, and if they're made uniquely, that is also interesting. I didn't watch the video when youtube recommended it to me a few days ago because I figured I knew exactly what it was about from the title (hand made Japanese swords, something I've watched hours of docs on already), well, I just watched it... it's about hand made Japanese swords. Title seems fine, but I am genuinely curious what you would propose as an alternative.

So they are expensive because they have a high price tag

I assume they went with "most expensive" because they couldn't say "best".

The concept of an American title is confusing to me. I'd love to hear that elaborated on a bit, but I'm thinking this whole thread is about to get flagged out.