Cheapest I can find these are £34.99, most people retailing at £39.99. That is plus postage too.
I spotted instore in Hedge End. I don't think they have online store.
Details from the Altec Lancing website:
"The VS2621 three-piece speaker system for computers & MP3 players was built with one purpose in mind – deliver blow-your-socks-off sound without blowing your budget. The unique angled shape of the satellites directs full-spectrum audio toward you for improved audio dynamics while the side-firing subwoofer pumps out impressive bass. Its compact size makes it ideal for small spaces, but there’s nothing small about the sound. All controls are at your fingertips and a handy secondary input jack lets you connect your MP3 or CD player while still linked to your computer."