They are not cheap, $35~ per game. They are all in boxes and some games are easy to be found and dirt cheap, some of them are probably almost impossible to find with box or at all. I remember trying to score an European Chrono Trigger with box and I was looking at $100+.
It's a good collection and everything's done, you get it all in one shipping and everything's clean and verified.
I didn't even know there was a European Chrono Trigger. Certainly the only one of my friends who'd ever played it was the Canadian. So I'm not surprised if it's more expensive than anything else, because it would be very rare (and, unusually for rare videogames, it's also a fantastic game).
It's a good collection and everything's done, you get it all in one shipping and everything's clean and verified.