Streamed it first to see if it was worth buying on disc, it is.
They have a really cool commentary feature where the image is shrunk to a 4:3 image so they can split it top and bottom.
The top image is the film as presented, the bottom image is the raw footage before visual effects were applied.
It lets you see how much of the film was digital and how much was practical. Complete with commentary.
I think this is the first time anyone has released the entire film in its raw state. Avatar had three versions on the disc, theatrical, extended and an even longer cut but the extra scenes in the third version were still in a raw animatic state.
Sin City also released the full film in its green screen version but sadly, it was sped up. The entire film runs through in just twelve minutes.