I noticed this price earlier today but then the price went up to £399.99 again, so i don't know what's going on but if you're looking for a ps3 at this price, then you need to take advantage of this quickly before the price changes again.
The current price is for the 60GB console which comes with a sixaxis controller for only £329.99 including guaranteed next day courier delivery, which is officially the lowest price anywhere!
I've also noticed it states on the site "last few remaining" so you'll have to be quick if you want to take advantage of this price.
Hope this helps. :)