Generally (though not always), high-end products actually tend to already fall in the bracket of higher markups and margins and I suspect the HD800 was no different.
This isn't even true, especially when you get to the flagship absolute most expensive products. Famous high end flagship loss leaders are everywhere, including the original Chevrolet Corvette. The Lexus LFA was priced at 375,000 and Lexus lost money on each one. Is Sennheiser even making a profit with the Orpheus at 50,000 ? Hard to say, it's a statement product. Paying Axel Grell and a team even a couple months of salaries to research and develop it, not to mention the custom manufacturing line required, probably means they have to sell more than their capacity just to make up for the operating and capital expenditure.
Headphones and most other manufactured goods benefit the most from economics of scale. If Sennheiser can sell more, they make more profit, because their manufacturing chains are more optimised. Considering the most common usage of gorilla glass at the moment is cell phones, and they are manufacturing a custom glass exclusively for the HD 820, you can bet that has huge effect on the profit margins of the product, and also speaks to the no compromise design goal of the HD 820 in the first place. The price is a happy medium between selling units and maintaining a profit margin. If Sennheiser could price it for less, they would sell much more units, could order the gorilla glass in higher bulk quantities (along with other components) and potentially make even more profit. That's how this generally works.
As I've said the entire thread, Sennheiser has already proven themselves to respect the price to performance ratio for their customers. Each subsequent headphone release tends to maintain the same or even lower prices compared to previous versions. The most rational expectation to have regarding the HD 820 is that they will continue this tradition, unless they prove otherwise.
It really does come across as many people are hoping this headphone fails, either because they have already determined it is too expensive before even listening to it based on wild assumptions, or that they have an ingrained prejudice against closed headphones and hate the thought that a closed headphone occupies the top spot of Sennheiser's line up.
It amounts to a bunch of negative nancy wishful thinking, which is absurd considering the headphone is only in prototype form, all initial impressions have been extremely positive, and Sennheiser as a company have proven themselves over and over.
The entire negative nancy atmosphere that some are perpetuating has no place in the conversation here, in my opinion. We should focus on the initial impressions, and stick to the facts we already know. Some excitement about Sennheiser releasing a new flagship is justified, IMO, but pages and pages of complaining about price, assuming this headphone is a rip off, wild assumptions about the lack of product development, and so on, are just thread pollution.
It's impossible to talk about any theoretical value proposition before the headphone is even released. If 2500 is more than you care to spend on headphones, which is completely understandable, perhaps you shouldn't be entering a conversation about $2500 headphones. Plenty of people have spent more and are completely satisfied. No one is forcing anyone to buy anything.