Yes, and it happens to every temple. If you want to earn gil, go to omega ruins, theres the mponster with the chest, steal from it(sometimes appear a monster called mimic or sometimes gives u mega-potion) From the mimic, u must have equipped double gil?? something that doubles ur gil . kill the monster and u will get 50k gil. I oredi reached 17 million gil doing all those stuff. And dark aeons doesnt give much gil, but useful Dark matter.