Playstation (PS1) price list - Elemental Gearbolt Assassin's Case.
When Working Designs published Elemental Gearbolt for PS1 they also made 50 Assassin's cases which were given out at 1998's E3 expo. Some were given away to journalists and others were given away to attendees in two separate contests.
The Assassin's Case includes the Elemental Gearbolts game, a Silver briefcase with locks, a gold plated GunCon, a PS1 memory card, and a congratulatory letter from Working Designs.
The most recent verified sale was for $3,000 on eBay which makes this far and away the most expensive game for the Playstation 1.