I've been looking for this or Singstar as a party game for New Year and came accross this great deal.
I know that Blockbuster had these for £34.99, but they appear to have sold out online now. Hopefully this will help someone find them locally, I picked up a copy today from my local Currys so there are still some around.
Ironically they are selling this cheaper than the standard version at £39.99!!!!!