The cheapest currently available, hurry up propably one day sale, just yesterday was 189 pounds!!! You can get 3.5% cashback via topcashback.co.uk and extra 3% off with this code: '3150AW' if you spent more than 150 pounds.
This promotional price is only valid until the 9th August 2009 or while stocks last. Before you install an E edition of Windows 7, please visit windows.microsoft.com/install-windows-E for important information. When you install the E edition of Windows 7, you'll need to do a custom (clean) installation. That means you'll need to back up all of your files and settings on an external hard drive, install the operating system, then re-install your files, settings, and programs. Important: The E editions of Windows 7 do not contain an Internet browser. Please get a browser from Microsoft or a third party and have it on a CD/DVD or another device so it's ready to install after the Windows 7 installation is complete