Professor Cozmo's Discovery
Holon Phantoms #89UncommonIllustrated by Ken Sugimori
Prices by version
| Version | Market | Low to high |
|---|---|---|
| Normal | $0.52 | $0.10 to $2.29 |
| Reverse Holo · Set Logo Stamp | $7.03 | $2.50 to $69.64 |
TCGplayer market prices for Near Mint copies, as of October 27, 2026. Each version is priced on its own.