[Edi]

The only demon that costs upkeep is Buer the Goat Sun. He has a cost of 100 which translates to an upkeep of ~6-7.

I have not seen ANY void summon that costs gold. Of the foul spawns/crossbred creatures, Ettin sosts 20 and the four-clawed big humanoid spawn is 15. Trolls, as mentioned above of course. Almost everything else is 0 goldcost.

What might be throwing people off is that lots of national heroes have a gold cost and therefore also cost upkeep money. E.g. Shadul Ummush the Traitor King has a gold cost of 290 like the normal Atlantean Deep Kings, so he hits the pocket book for about 19 and change per turn. All of these are going into the bug list once I'm done.

Edi