Well cartridges vary enormously and there are so many bits of them to vary in stiffness, mass and add or subtract to/from the signal in their layout, from stylus shape, cantilever design, pivot design, damper material, magnetic circuit and body structure.I bridle as much as the next forum member at crazy audio prices.
But this thread reminds me of a fairly recent experience. My pal does some reviewing and received a Top Wing Blue Dragon Cartridge. When he told me this cartridge retailed for $12,500 USD I just shook my head. (I no longer actually burst out laughing...the number of crazy-priced items he's had pass through his place has inured me to hearing the crazy prices).
That price seemed insane for a tiny little cartridge.
But...holy cow! I'd been listening to his system for years and years (same turntable) and I'd never heard anything like that come through his system from his turntable. Record after record was just head-shakingly vivid, detailed and realistic.
That's totally anecdotal so I don't expect it to carry any weight here. But I admit I left thinking ...if that cartridge *really did* perform the way it sounded to us, well...if you have the money.....
OTOH absolutely the only expensive, and then not -that- expensive part of cartridges is the stylus and, sometimes, cantilever.
Manufacturing precision is important and difficult and it is actually unlikley that the very expensive hand built cartridges could all be close to each other in tolerance. Maybe Ortofon and Audio Technica have the tooling to do it, most won't.
I find it the story that some makers select their cartridges and give them a name based on the performance despite them all being made to be the same entirely believable.
The only justification for a price like that is the same as the fashion business, not anything to do with designing and making it.
BTW if you like vivid, detailed and realistic Deccas (London as they are known now) are my favourite and much less expensive than that!
http://www.londondeccaaudio.com
I have a Super Gold. The older ones can be sent in for a rebuild and are highly prized because of the body structure. It has, IMO, the most logical transducer layout though as a result it is extremely sensitive to warps and dirt.