Quote Originally Posted by Big D
The Monster Arena is a huge and often boring challenge, but you get huge quantities of the best items by doing it
BORING!? Man, it's one of the funniest sidequests in RPG history so far!!!
Oh, well... the best way I know about is to capture a Marlboro Flower and then fight it on the arena over and over again and bribe it everytime. It will cost you alot of gil but... that's the fastest way I know about...