I think Soundsmith has the best deal for re-tips/rebuilds. Their top cartridges have great reviews and people do like them - you should be able to find something compatible with your Sumiko. The Hyperion ES Mk II, their top MI cartridge retails for $8k and the rebuild is only $850 to the original owner. That's hard to beat.
What Cartridge Manufacturers Will Retip Their Moving Coil Cartridges For A Fee?
What cartridge manufacturers will retip their moving coil cartridges for a fee?
I have a $3k Sumiko cartridge....Sumiko offers me $900 credit for my old cartridge towards the purchase of a new $3k Sumiko cartridge.
Next time I buy a new cartridge, I'd like to buy one from a manufacturer that will retip it for a fee. Do any manufacturers of moving coil cartridges do retipping?