Monsters Vs Aliens 2 Disc Limited Edition DVD is only £2.85 at Zavvi.
With Zavvi knocking off £1 per order it is only £1.85 delivered. Even with original price it is still a bargain. Seems to be also the 2 disc edition with bonus movie and extra material.
"Special Edition, Disc 2: B.O.B.s Big Break In 3D & 2D, Karaoke Music Party, Paddle Ball Game, DVD-Rom (2D) - Monsters Vs. Aliens Activision Game Demo with Cheat Code"
Need I say more, first time post so be gentle.