Most (but not all) of the Disney 3D Blu-Rays are currently available at HMV for a tenner. Considering these are usually pretty expensive then this seems a pretty good deal to me.
Toy Story 2
Toy Story 3
The Nightmare Before Christmas
They've also got Cars 2 for £12
Others such as The Lion King and Tangled are their usual £28 (or so) price still.