It costs that much because people are willing to pay more for better sound, better noise cancelling, etc, even if the returns are diminishing. Perhaps a $500 pair of headphones only sounds 3% better than a $200 pair. But people will still shell out for better headphones. Sometimes they just think it is better even if it isn't actually measurably better. The existence of numerous successful products on the market is evidence that this is a niche where people are willing to pay for such products.
It's kinda like, who decided that TVs and phones should cost the same? Or who decided that a khinkali should cost 3 times as much as a xiaolongbao?
It's kinda like, who decided that TVs and phones should cost the same? Or who decided that a khinkali should cost 3 times as much as a xiaolongbao?