Tesco's Blu-ray prices are a joke. The Amazing Spiderman was £22.50 in my local today. Most of the other Blu-rays on the shelf were barely under £20.
Or you could just go to the Skull & Crossbones where everything is free.
Surely that's for the 3D version?
Anyhow the normal 2 disc Blu-Ray is £10 in Asda.