Bellboys pointed this out in an old thread, and I think he's offline now, so I'll post the deal. If you want to give someone some rep, please give it to Bellboys. :)
This is the Typhoon Wireless Office Desktop XP keyboard and mouse, and it has been reduced to £4.99 from amazon. If you're placing a larger order, you could throw this in to take care of the postage OR you could get free express delivery on this item, by using the Hellman's loophole, which I'll link to in the next post.
Details: Wireless freedom through dual channels digital radio technology, the Typhoon Wireless Office Desktop XP consist of a Keyboard with Multimedia, Microsoft Office and Internet Browser hot keys, a streamline one touch button Receiver, and a Optical mouse with 2 special button for Internet browsing. Ergonomically designed with wrist pad attached and the wireless mouse shaped to provide comfort during extended use.