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Yes, it's 256GB of very, very fast Compact Flash storage for an insanely high price. (Guess: About $600 AUD). Shipping is $10.25 USD for about a 3 week delivery time to Sydney; higher cost to get it sooner.
Other options:
2x 128GB for AUD$544 delivered from Amazon.com (using Amazon Currency Converter…28 Degrees would be cheaper) (Thanks @spackbace)
2x 128GB for $514 AUD delivered from B&H
Speed-wise, the Lexar 1066x cards are as fast as you can get for most cameras out today. There's a newer technology that's faster, but I don't think any cameras supporting it have been released yet.
But if you use fast CF, you'll recognize that the price is much less insane than it usually is, and really pretty competitive on a GB-for-GB basis. Australian prices from shops here tend to be in the $1000 AUD and up category. Best price on staticice is $1153 AUD. Even on ebay, factoring in currency conversion, you're still paying over $800 AUD.
The Lexar cards are great for CF-capable cameras with high speed shutters such as the Canon 7D Mk II, particularly if you like to shoot raw.
I'd buy this if I hadn't laid in a supply of the 64GB Lexar 1066x cards during a B&H sale before Christmas (which I, in poor taste, forgot to mention here… so I wanted to mention this deal, which is on a GB for GB basis roughly equivalent in price.)
What are the use cases for such a large card? Longer uninterrupted time lapse sequences, use in the secondary card slot as a backup card (yes, the 7D Mark II does a sort of mirroring if you set it up to do so), laziness (best combined with backup card :-).
Educational materials for those with slower cameras who don't think any current camera gets any gain from using high speed cards such as this:
http://www.cameramemoryspeed.com/canon-7d-mark-ii/fastest-sd…
Of course the buffer fills EVENTUALLY, but it's a question of how long things go before it fills. One poster claims cameras can only handle 10 RAW images in the buffer, so I guess he's never played with a 7d Mark II, that can buffer over 30 RAW images. With the shutter held down, I write about 35 RAW images, and then it stops because the buffer is full, and with the shutter still held down, it starts doing 5-6 images per second, sustained, with a sub-second gap between each burst of 5-6. So it all depends on what your camera is. The one I have was designed to capture lots of images quickly — not all are.
2x 128GB for AUD$544 delivered from Amazon.com (using Amazon Currency Converter…28 Degrees would be cheaper)
Handy having a spare, and saving the money by doing so