4 printings of Garruk's Harbinger
They range from $0.23 to $0.62 — a 3× difference for a card with the same name. The set code and collector number printed along the bottom edge are what tell them apart.
| Core Set 2021 Promos | PM21 185p | $0.62 |
| Core Set 2021 | M21 185 | $0.34 |
| Core Set 2021 | M21 307 | $0.23 |
Not sure which one you are holding? OtterDex reads the set code and collector number off the card and tells you.