G-Technology Ships 8 TB Thunderbolt RAID Drive
G-Technology announced an external Thunderbolt drive the company claims is capable of reaching sustained throughput of 280 MB/s.

The device ships with a two 4 TB, 7200 RPM Deskstar hard drives for a total capacity of 8 TB in RAID 0 configuration. The manufacturer says that the bandwidth is enough to enable the drive to "transfer a full-length, high-definition, internet-ready H.264 movie in less than a minute."
G-Technology said that the drive supports multi-stream HDV, DVCPro HD, XDCAM HD, ProRes 422 and uncompressed SD workflows and can be daisy-chained with up to five additional Thunderbolt drives via its dual-port interface. The device is sold via Apple Stores and is priced at $1000. A 6 TB version is available for $850 and a 4 TB model sells for $700.
Still want a Thunderbolt 2.5" enclosure for SSD...
Why were you expecting 5k or 10k ??? It's just 8Tb and Thunderbolt !
Because it is effectively an apple only product. And apple products, even their accessories, are generally overpriced apple-taxed... Or at least apple-coattailed-taxed, much as firewire devices were often overpriced...
To see that this is about $125/TB, that isn't unreasonable, particularly with the added portability and speed.
I can actually recommend this product based on specs for those who may need it without feeling like crap for doing so on a completely unreasonably priced item...
A 1TB HDD 7200RPM from WD or Samsung costs about $110-$140.
If this product does what it says, 8TB sustaining 280mb/s, seems like a good deal to me.
But they aren't paying retail for the drives....so really they are charging you more then that for the case...
And ya that's apple for you....