Cheapest by far I've seen this ever available. I suspect it's the 1st edition rather than the R2
Processor Intel® Core™ 2 Duo SU7300(1.3GHz,800MHz,3MB)
Operating System Genuine Windows® 7 Home Premium 64-Bit
Display 29.5cm (11.6") WideHD 1366x768 (720p) LCD
Memory1 4GB1 Dual Channel DDR3 SDRAM at 800MHz
Hard Drive 500GB2 SATA hard drive (7200RPM)
Warranty 1Yr Next Day Hardware Support included with your PC
Advertised System Weight 4.39 lbs.
Note it expires 15th June (today)!
Would snap one up if I hadn't already bought one back in september last year! Though at this price tempting to buy a second one!!!
If quico tracks, you should get around £49.90 cashback (10% for Alienware, expires in 4 days) bringing it down to under £450.
Also if you buy two of these or pad the order out to over £600, you should be able to use the 12% off every voucher. (Bringing it down to £439 per unit, though you may have less chance to get the cashback too!).