What have the bonuses been?
Most of the localization's bonuses are just artbooks of art you can find by a quick Google.
Whereas the Japanese pre-order of Graces F netted me: A big freakin' artbook with a drama CD signed by Inomata, along with pre-order bonuses ingame. Such as alternate costumes, extra artes, and new battle themes.
I heard that Vesperia PS3 got the same treatment, but the ingames were later released and improved over PSN... :/