What, pray tell, is the "all this effort" of which you speak?
They designed up some wire key guards to fit the existing mounts of sheet metal guards. They had the CNC lathe program for the neck tenon changed to put a taper. They designed a new neck key and neck receiver. They had someone draw up an engraving pattern, and they selected a pseudo-antique pseudo-patinated finish treatment. And they're having buckets of keys shipped to Elkhart for final assembly, which is probably 4-8 man-hours of work at an imputed labor+overhead rate of $100 at most, offsetting 4-8 man-hours of work at an imputed labor+overhead rate that's probably on the order of $50/hr. (For those who don't want to calculate, that means a probable cost increase of $200 to $400.)
It's very cheap to do these things. I'd roughly estimate the manufacturing cost increase over the standard hown at no more than $1000 per unit. Probably it's a lot less. The NRE costs (non recurring engineering costs) i.e., design work, tooling, etc. would probably be less than $20,000.
The "Effort" of which you speak is primarily advertising and marketeering.
I rather doubt that this horn is "substandard". I expect it has very much the same design, fabrication, and assembly quality of the average good quality Chinese or Taiwanese instrument - which can be very good indeed. But it's not something special except in its cosmetics.
If the manufacturing cost of the average good quality Chinese or Taiwanese instrument is, say, $1000, and this one is $2000, and they increase their average selling price from $3000 to $6000, that means it'd take them ten unit sales to recover the entire cost of the project.
This is exactly why mature consumer product companies owned by private equity who have no interest in or ability to do actual product development, LOVE LOVE LOVE "Special Edition" products. A bit of inexpensive NRE (probably outsourced), an ad campaign, minimal changes to the product itself (mostly cosmetic), and if you sell a handful you've paid for the product, and every one after that's just profit.
So,
"New Look! Same Great Product!"