So I bought a copy of Broken Sword for ps1 several years ago. It was on clearance, and was sealed in one of those awful crimped-plastic cases, presumably for display or anti-theft purposes, or both. Long story short I never opened it, and while it's probably still a little dusty I imagine it's still in good shape. What's something like this worth? I know the game's not a widely-known classic or anything, but it has its own cult following.