Xillia 1 is already confirmed, so Graces F must have sold somewhat tolerably for that to happen. Xillia 2 will probably be almost entirely dependent on the success, or not, of Xillia 1.
[quote name='Prismatico']In Vesperia's case, a second printing also helped bring down the value.[/QUOTE]
True. The LE of Vesperia, though, remains one of the rarest 360 games in existence.
Not that there are many rare 360 releases. Mass Effect 1 LE goes for a lot, as does BioShock LE. And the Borderlands 2 Ultimate Loot Chest, unless they make more. That's about all I can think of.