Not much to say other than what's in the title. Is it worth it to spend the ~800k to make the Hell-level staff? Is farming the level (supposed to be approximately equal to Hell Act IV drops, but presumably a bit easier to kill stuff) worth the cost? Are people selling openings/runs in large amounts?
Yes, because without it you can not make the Infernal Staff of Herding.
Edit* It is only 500k btw.
really to make the hell stick it would be 850k (100k for bell 50 k to craft normal, 200k to upgrade to nightmare and then 500k to upgrade to hell) then another mil to get the inferno stick
myself im sitting with the hell stick but i have pattern to upgrade to inferno just dont want to spend the gold since i dont have alot and not sure if i can farm the lvl if im only 1/2 thru inferno act 2 on my DH