How come no one has said Xenogears? Xenogears!
Because it never got a PAL release. Neither did several of Dampe's. Like Enay said, you miss out on a lot of RPG's if you don't get a modchip. The PS2 has had a few more PAL conversions ( I was impressed how La Pucelle Tactics, Disgaea, Phantom Brave and Makai Kingdom have all had PAL releases. ) but there are still some major omissions.
Sorry to hear about the high price of Star Ocean 2 and Suikoden 2. I had no idea they went for that much. Shame I love em too much or I could turn a tidy profit on a few of these.