Why do better MC cartridges cost a fortune?


I mean $5k - $10k for a piece of what? I can understand $10k for a turntable but for a tonearm or cartridge?
They charge and we gladly pay? And you have to retip or replace it soon enough. Most of them come from Japan. They sure know how to do business, don't they?
inna
Everything is stupid at its extreme. These threads you start seem to be aimed at generating contempt toward those that can/do spend a lot of money on audio.

I, like many here, don't have that kind of money but have instead spent many years and countless hours assembling an audio system that is not defined by such identity bias.  Maybe start some threads on how that is done...

Dave
From what i gather you can buy direct from Japan for those made there and the price is not much different than the retailer here pays. You don’t get a warranty from the company by doing so, since they are gray goods, but I know people who save a lot of money doing this with high end cartridges.
I hate the fact that the big league cartridges are often $10k plus.
One theory- I certainly haven’t been able to prove it--is that if you buy a very expensive arm, you can get away with a lesser cartridge--e.g. that SAT? which retails for 32k dollars? Hell, that’s only the cost of two cartridges and a ’good’ arm.
There is a mystique to these things- built by hand by ancient Japanese, miniature winding techniques, exotic wood and stone bodies, etc.
I like what the Airtights sound like on my system, so I’m on my second one- the Supreme- no doubt when that goes, I’ll ramp up a step.
Never tried to have one ’retipped’ but may do so at some point- then again, when there’s something "better," why go backwards?
There’s a lot to vintage that I like but vintage cartridges make me wary.
One thing I’m interested in doing, when I finish my vintage set up and install an SME 3012r, is trying a whole range of less expensive cartridges- from the SPU to the wooden Grado, etc.

PS: the really galling thing is that they are degrading consumables that have to be replaced. Tubes are the same, and sometimes expensive, but generally, cheaper even for some of the better NOS ones. A piece of gear, like the turntable or tonearm, amp, etc. can last a lifetime. Speakers, maybe not so long, but there are refurbishment possibilities for those, as well as vintage amps. 

A big part of the problem may be economies of scale.

Back in the 70's, everyone that listened to music at home, owned a turntable, arm and cartridge. There were hundreds of companies making cartridges at all price points. The skill for building cartridges was more widespread and parts were mass produced.

Today, cartridges, especially MC, are a niche market (inside a niche market). Getting parts made, skilled assemblers, skilled designers, etc is quite a bit tougher, and therefore, more expensive. 

Now, I am not saying these are the only factors, but I am sure they account for part of the high prices. 
Though a side issue raised by willemj, it requires a response. Willem, you are entitled to your opinion regarding CD players vs. turntables, but you are ignoring one kind of important fact: an LP won't fit into a CD player's disc tray. I have a lot of music on LP, music I'm not going to through out even if CD players did sound better than LP players. Which they don't, by the way.