4 printings of Thundermare
They range from $0.89 to $10.67 — a 12× difference for a card with the same name. The set code and collector number printed along the bottom edge are what tell them apart.
| Ninth Edition | 9ED 224★ | — |
| Portal | POR 152 | $10.67 |
| Ninth Edition | 9ED 224 | $0.89 |
Not sure which one you are holding? OtterDex reads the set code and collector number off the card and tells you.