Picked one of these up instore at the Lego shop in Milton Keynes, reduced from £48.95 down to £21.00. Still full price online. Not bad for a 956 piece set (although slightly bloated by the huge number of pieces that make up the tentacles and red eyes!)http://shop.lego.com/product/?p=10192&LangId=2057&ShipTo=UK
Set 10191 Space Justice (the "good" counterpart to this "evil" set) had a similar reduction (not listed on the Lego site).