I'm at the end of the game, the Sky Fortress Bahamut appeared, and I decided to go after some of the ultimate equipment (mainly the Tournesol and Masamune) and the rest of the Marks. I have been doing alright with the loot collecting for the Tournesol until I found out how much the Canopic Jar (to get the High Arcanas) was. 250,000 Gil, I only have over 222,000 Gil now. I have been having Gil problems all throughout the game and it took me a long time to get to this amount. 
Seeing that, with how much the Tournesol is (600,000) and the Masamune (350,000): Where is the best place to get loot that sells for a lot of Gil?

Seeing that, with how much the Tournesol is (600,000) and the Masamune (350,000): Where is the best place to get loot that sells for a lot of Gil?
