Bryce K. Nielsen
Does the party get 400? I can't find it in the rule book that says differently.
Exactly. If it doesn't say differently, than the "normal" vanilla rule applies. In the normal game when you pick up a Treasure Pile, each Hero gets 100 gold. In the Advanced Campaign, when a Hero gets money, it goes into the Treasury. So when a Treasure Pile is picked up, each Hero gains 100 gold and it goes into the Treasury, effectively meaning the Treasury gets 400 gold.