Seems like an amazing price for the spec, as well as the brand!
Possibly £330 if you do the £75 cashback for trading in your old laptop (but thats complicated).
-Processor: Intel Core i3-370M, Clock speed: 2.4GHz, Front Side -Bus: 1066MHz, 2nd level cache: 3MB
-Operating System: Genuine Windows 7 Home Premium 64-bit
-Design colour: Black finish with textured pattern and black keyboard
-System Memory: 2048MB + 2048MB, Technology: DDR3 RAM (1066MHz)
-Hard Disk: Capacity:320GB, Drive rotation: 5400rpm
-DVD Super Multi drive (Dual Layer)
full spec here: http://uk.computers.toshiba-europe.com/innovation/product/Satellite-C660-11K/1095848/toshibaShop/false/