MSI GeForce GTX 580 Twin Frozr II/OC NVIDIA Graphics Card.
Going directly to the product page will only get you the regular price.
You must buy it from the 'Today Only' page of Scan.co.uk to avail of the reduced price.
As it's Scan, there's some way of getting a reduced delivery charge (or free to parts of the UK). You have to have been a member of avforums.com for at least two weeks though. http://www.avforums.com/forums/scan_offer.php