Not sure if this is supposed to happen or not, as I am fairly new, but I just recently earned enough to begin Sagittarius quests and in the middle of one of them (after buying some fairly pricey items!) it wouldn't let me finish the quest. :T
I bought all the items necessary but when I went to finish the quest it gave me his, "you haven't got enough money to try my quests!" type message. Is this normal or is this a glitch? I'd really like to turn in the quest before time is up seeing as I've spent so much! :(
Sadly, this isn't a bug. You need to maintain the minimum amount of sP in order to complete the quest. :(
You need to have 750 000 SP or more to do his quests.
Likewise, you cannot do Sarah's quest if you have more than 500 000 SP