8 printings of Festering Goblin
They range from $0.09 to $0.37 — a 4× 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 130★ | — |
| Archenemy | ARC 16 | $0.37 |
| Planechase | HOP 27 | $0.33 |
| Tenth Edition | 10E 143 | $0.27 |
| Onslaught | ONS 148 | $0.18 |
| Dominaria Remastered | DMR 85 | $0.11 |
| Modern Masters | MMA 87 | $0.09 |
Not sure which one you are holding? OtterDex reads the set code and collector number off the card and tells you.