The World Ends With You is coming soon.
Well there is the Kemco games, which are cheaper, like Symphony of Eternity
Gameloft actually made a Final Fantasy/Chaos Rings "clone" which is like $5 on iOS, for some reason i don't see it on Android Market, called Eternal Legacy. You might be able to get it off the web directly from Gameloft, so investigate here:
https://www.gameloft.com/android-games/eternal-legacy/
Then there's Blazing Souls Accelate
Also look into maybe into a Turn-based Strategy/RPG combo : Call of Cthulhu: Wasted Land
The DS version or that lame-looking social version?
you can play FF and Chrono Trigger with a GBA emulator