Boxer for $400 sold in Japan

Japanese men are famous for being very meticulous about their underwear - only the best. I have also heard that Japan is an expensive country and prices for even everyday products are outrageous. Japanese women do the same with their lingerie. However, this is outrageous. A store in Shibuya, Tokyo, called Luscious, sells a line of boxers that sells for Yen 44,100 or approximately $400. It doesn't look like such a big deal to me. Actually, it looks somewhat feminine.