Well I cant remember exactly but i think the three Atelier Iris games only had 2 endings or something like that, and Mana Khemia had a couple of endings (one for each character if i remember right + one bad or something). So when looking at the latest GUST games that has been released here in europe, 30 endings is quite unusual.
I wonder how much work it is to get each of those endings though, because i want to see 'em all.