How much gold cost an completely leveled up underworld faction?

The question came up in our guild.
How much gold is needed to level up an underworld faction to level 999? :thinking:
Somebody any idea?
A few of our guildmembers tried to find out by calculating but the numbers they came up with where somewhat divergent. :smirk: :confused:

Depends on which treasures are used and when, but at least 133 million.


At least 133 million? :open_mouth: :dizzy_face:
Holy โ€ฆ. you know whatโ€ฆ :grimacing:
Anyway, thanks for the info :wink: