Can some explain to me why Janzen Audio products are so expensive?

I suppose I’m a bit out of my league here in terms of knowledge. When I’ve looked at capacitors in the past for boards and such they’ve been significantly less. I guess this type, specifically made for speakers , are quite a bit more.
 
Is the difference in quality purely objective and scientific, or is it based more on subjective views of how the speaker sounds?
As a second possibility, is the difference in price largely in the perceived quality and expected lifespan of the parts?
 
Is the difference in quality purely objective and scientific, or is it based more on subjective views of how the speaker sounds?
As a second possibility, is the difference in price largely in the perceived quality and expected lifespan of the parts?
Sometimes there are significant measurable differences among capacitors, sometimes not.
The winding process is similar for most film capacitors, though details of terminations may differ.

The materials used (other than silver) are not very expensive, and most film capacitors should last
a very long time if used within their specs. Sound quality is a personal matter, and there are many disagreements.
Likewise on price, it's an individual matter.
 
Companies are out there to make money, if they find the correct market & elude ''THEY ARE THE BEST'' some naïve customers will buy. Also there is a body of people who have enough money not to care what the price tag is.

Cheers
 
I use their crosscaps and inductors. I find them to be good quality and not expensive. Can you site examples?
The Crosscaps are indeed affordable for places where you need/think you need* a foil cap. But the Z-superior mentioned near the beginning are 8 times the price. Some of that will be the 2% tolerance of course but the Data sheet is a marvellous read
The Superior Z Cap is a metalized polypropylene foil capacitor but made as special construction we call a “Super Cap” A “Super cap” is made with a special double lane metalized polypropylene foil and using special winding machines and techniques, two capacitors are connected in series within one capacitor housing.When making a “Super Cap” you therefore need 4 times the foil used in standard type metalized polypropylene foil capacitors. Compared to s tandard type metalized polypropylene foil capacitors the Superior Z Cap is on a higher audiophile level, where even finest nuance improvements can be heard.Nitrogen filled instead of dielectric fluid, which means having more foil per capacitor and eliminating risk of evaporation.

The rest of the data sheet is missing a lot of what I would expect from a capacitor data sheet, suggesting this is a 'lifestyle' component, priced where the market will pay for it vs the crosscaps which are generally in the 'affordable' category. Can't comment on the inductors. But as long as it's an informed decision people can spend their money where they want.

* I know a little naughty of me, but Bateman did do all the measurements so you can decide where to spend your money...
 
I’m just trying to get a feel for this specific niche of audio parts. I’m a bit familiar with the hierarchy of Aluminum Electrolytic Capacitors used in amplifier boards, but this use seems to have drastically greater price differences. I’m wondering why that is, do they all meet the same specification and if tested would the lower priced cap be identical or nearly so to the more expensive version?

Is reliability considerably different between brands?

Or is much of the difference in attitude based on subjective opinions about the musical qualities these parts bring to the speaker?