[Used] GBA hardware pouch for storing the GBA Celebi Green [Pokemon Center exclusive]

There is no GBA itself, only the pouch. I previously purchased it as-new from a collector's shop, opened it to check its condition, and then kept it as part of my collection. I had been planning to use it if I ever got my hands on a Celebi Green GBA, but as it doesn't look like I'll be able to get one, I've decided to put it up for sale. I think it was sold exclusively at Pokemon Centers when the Game Boy Advance Celebi Green was released.