This will be more than the capacity of a DVD and you will sure be able to place a lot of documents on this small, rubber-shielded memory stick. As a matter a fact it will be almost enough to put the full dual layer DVD on it. Now that's something.
We don't know the price but as the memory prices are going down we don' expect it to be too expensive. It will sure cost more than a /$100 as this is exactly how much the 4 GB one costs now.
We are sure that Corsair won't be the only one to launch such a large capacity USB memory key. The 8 GB is a lot of space for a key chain jewellery item but the flash memory prices are just going down. µ