Please be gentle it's my first bargain post!
Cheapest price around at the moment apart from some open box versions. If you buy one now you also get a free 500gb drive when you send off for it. (I've done this in the past and the drives are seagate ones.)
Free shipping from ebuyer so it's a total of £139.99.
About the readynas:http://www.netgear.com/Products/Storage/ReadyNASDuo.aspx
With a ReadyNAS Duo on your home network, youll have the peace of mind that youre no longer among the 50%+ of people who are just a hard drive failure away from losing valuable iTunes files and thousands of digital pictures..forever
ReadyNAS Duo is the heart of your digital home. It keeps your digital media safe* while allowing you to share it with all of your computers, games consoles and media players. Built in a sturdy steel housing and backed by an industry leading 3 year warranty from one of the biggest names in home networking, NETGEAR. Simply add up to two SATA hard drives of your choice and youre ready to go!