LogFAQs > #977103253

Don't really feel like trying to price all my games, but I know Suikoden was going for a few hundred at one point. Probably that unless the price has dropped since then.

Either that, or one of the obscure games that no one really remembers exist, like Echo Night or Koudelka. But the problem there is that if no one remembers them, no one is really interested in buying them either, so their rarity doesn't necessarily translate into demand.