Q: Who would release a box set dressed up in faux-leather and studs?
A: Who else? PRIEST!
This 5 disc set (4 CDs/1 DVD) compiles a generous sampling of Judas Priest's music over the decades, from Rocka Rolla to Demolition. While the tracklist is far from perfect in my eyes (where's "Rocka Rolla", "One For the Road", the studio version of "Victim Of Changes", "The Ripper", and so on?) it does provide some previously unreleased live versions (both B-sides and never-before-released) and a completely unreleased demo. It's not a bad set. Just not the one I would have made.
The unreleased demo is "Heart of a Lion", recorded for Turbo. You have heard this one before on Halford's live album. It was a surprise that "Heart of a Lion" was not released on the Priest remasters series, obviously they were saving it for something special, this box set.
There is also a DVD, which has since been released on its own. This is the Judas Priest Live video, from the Screaming tour. I read somewhere that guitar overdubs have been added, but I have been unable to tell. I don't have my old VHS anymore to compare it to.
Review the track list yourself, see what you have and what you want, amd buy accordingly. I can tell you that this set was worth it for me for "Heart of a Lion" and the unreleased live material.