6 printings of Flame Javelin
They range from $0.07 to $0.30 — 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.
| Duel Decks Anthology: Jace vs. Chandra | JVC 53 | $0.30 |
| Duel Decks: Jace vs. Chandra | DD2 53 | $0.16 |
| Shadowmoor | SHM 92 | $0.16 |
| Duel Decks: Sorin vs. Tibalt | DDK 70 | $0.11 |
| The List | PLST DD2-53 | $0.07 |
Not sure which one you are holding? OtterDex reads the set code and collector number off the card and tells you.