The phrase "exclusive edition" means that something is special and limited. It's like a special version or version that is only available to a small number of people. Full definition
The Metal Gear Solid — Solid Snake THE ESSENTIAL edition includes the Metal Gear Solid — Solid Snake Statue STEALTH CAMOUFLAGE NEON GREEN edition, Metal Gear Solid — Solid Snake Statue STEALTH CAMOUFLAGE edition as well as the Metal Gear Solid — Solid Snake Statue EXCLUSIVE edition for the Metal Gear Solid fan that has to have it all. (metalgearinformer.com)