I was looking for this wireless keyboard and mouse combination for a long time and the best price I could find was hardly below £25. Finally Amazon are offering it for only £16.99 and using super saver, you'll save for delivery cost.
Order it now (I just did myself) and if the price goes lower, you can claim the difference in 30 days. ;-)
Technical Details: Product Description: Logitech Cordless Desktop EX 110 - keyboard , mouse * Device Type: Keyboard * Localisation: UK * Connectivity Technology: Wireless - RF * Wireless Receiver: USB / PS/2 wireless receiver * Key/Button Function: Internet browsing, multimedia, calculator * Localization and Layout (DA): UK * Features: Spillproof * Cables Included: 1 x keyboard / mouse adapter - external * Battery: 4 * OS Required: Microsoft Windows 98/ME/2000/XP * Manufacturer Warranty: 5 years warranty