The upcoming Messiah Trilogy Omnibus

I've always heard/read plenty of good critics and review about this saga but never really jumped into the trades. Then Marvel finally announced the Omnibus which (supposedly) collects all of it.

Do you think it will be worth it? Does it have all the necessary issues, or did they leave something out?

Also, the cover price seems quite attractive, $125 for around 1100 pages.

But now I'm starting to FOMO'ing: will it sell out quick, or do you think most people will pass over it? The price is not bad, but I have a thing against paying full cover price, I always wait for discounts (minimum 20%).

Should I pre-order right away, or maybe wait a few months?