Maxtor Basics 500GB External Hard Disk Drive reduced from £49.97 to £25 @ Tesco, Toton, Nottingham. This is an in store only reduction but I don't know if it is nationwide.
Link is to the item on-line which is still priced at £48.69 but is out of stock.
Installation software included.
Will store approximately 8,330 hours of digital music, or 160,000 digital photos, or 500 hours of digital video, or 125 (2 hour) DVD quality movies, or 250 exciting games (capacity values are approximate - actual quantities will vary based on various factors, including file size, file format, features and application software, DVD quality movies exclude high definition.
USB 2.0 connectivity.
Power adaptor and USB cable included.
Windows 2000 Pro/XP Pro/Vista: Pentium III, 500MHz, 128MB RAM.
Mac OS X (10.2.8 or later): Apple G4 processor, 128MB RAM.
Size 20.3 x 4.5 x 12.7cm.
Styles may vary.
Technical support: maxtorsolutions.com
Manufacturer's 3 year limited guarantee.