[Edi]

Sea trolls and normal trolls both cost upkeep for a very good reason: both are site recruitables from Troll Pit (normal trolls for the earth site, land only, sea trolls for the sea-only water site). Sea trolls cost 50 gold, hence 3 and fractions upkeep, normal trolls cost 60 gold and 4 upkeep.

Both sea kings and troll kings cost 150 gold, hence 10 upkeep. Sea trolls in general are completely worthless. They only have fist as weapon, thei have an abysmal attack and poor defense rating and relatively poor morale. Their only redeeming quality is not needing supplies, and that doesn't compensate for their weaknesses. They are better in Zen's spell mod, have claw for attack and an improved attack rating.

As a side note, other creatures that are summonable and cost upkeep are black hawks (5 gold, so 3 of them cost one upkeep), thralls, Mictlan slave levies, madmen and mad deep ones (1 gold each), as well as mad priests and holy deep ones. I'm not sure about Draconians, I need to check that.

Edi