Good deals on Zyx cartridges

The eBay seller '2juki' has some great deals on Zyx cartridges:

Zyx R30 high output moving coil cartridge for $500 (list price is $1000)
Zyx R100 high output moving coil cartridge for $830.80 (list price is $2000)
Zyx R100 Fuji Copper high output moving coil cartridge for $1212.52 (list price is $2500)
Zyx R1000 Airy 3 copper high output moving coil cartridge for $1635 (list price is $3450)

He also has some good deals on Shelter, Denon and Dynavector cartridges.