Summary:
What you pay has not much to do with R&D costs these days, people should stop thinking that prices are related to actual costs for R&D/manufacturing/whatever, it's ONLY marketing strategy (including ****ty market studies to see what people are willing to spend).
And as long as there are people with "too much" money in their hands, and no common sense (which is tightly related, since you tend to lose contact with reality when you have very high income), prices will continue to inflate. Emerging countries are such a wonder for this, along with the slow decline of scientific education (why studying science only to get underpaid jobs ?).
The more it goes, the more people make completely uneducated decisions when it comes to hobbies, making marketeers life easier and easier.
When you see Sony selling a microsd card making music "sound better" while music is stored numerically, any bulls**t will do the job fine !
I don't think the situation with medical companies (who are the ones mainly responsible for medical treatment costing so much) compare to the small guys who build headphones. Go to the actual factories of companies like Audeze and MrSpeakers and go and see for yourself the work that goes into what they do. I want to see (based on whomever made the comment) you tell them that it only takes "a few months" to design a TOTL headphone, and do it yourself, including building a business around it, to prove them wrong. Don't forget that once the headphone is released to the public, it will be torn to shreds publicly on here, irrespective of whether you are a paid sponsor. You get to watch people who have no idea of the efforts you made criticize everything you've done, and then everything you say, then everything other people said you did whether you did or not.
I'm with you on the decline in the level of scientific education. However I don't think that relates. People, including those with a science background, want to buy expensive toys as well, and there is a lot of science in the design of expensive headphones.