I got this quest where I should pay 3000 supplies get a hidden reward, so after I paid the hidden reward is 1 coin!!! wtf...pardon my french but is this a bug or did the dev make it this way?
if its the one where the old lady asks to help the sick villagers or something like that, she comes back later with diamonds. If its a Jester quest...well...sometimes he screws you, once in a while he gives you some diamonds, usually the former though. Its your choice whether you want to do those quests or not.