I consider it one of the better deals in philatelic literature. It now covers revenues as well -- so it basically covers everything BEP.
What I like is that it doubles as a checklist by numbers and positions. I happen to collect Mr. Zip blocks as well, so it's convenient for me to mark it in the checklist.
I think you had asked about the UV lamp? Durland will also tell you which plate numbers exist only/both tagged/untagged.
It's an overall great reference that covers printing presses as well!
You will enjoy the catalog!

k