$500...no.
Makes these at $240 seem like a genuine bargain. They will only be appreciated, though, in @uberwaltz’s immortal words, by "those fortunate members with the hearing to know that they do indeed work".
That is a very good sales pitch for a tiny fuse that costs $240, the price of a fairly decent pair of headphones.
BTW on the Furutech site, a fuse only cost $54!!!! Getting closer......