There are quite a few permutations of the Lord of the Rings films out there on Blu-ray, but the extended editions are the ones you want, and the extended trilogy pack has never been cheaper. In fact, it almost never sells for under $50. Just note that this is a Gold Box deal, so be sure to lock in your order before this price is thrown into Mount Doom.
Source: Kotaku – Own the Complete Lord of the Rings Extended Edition Trilogy For Just , Today Only