10 printings of Arc Lightning
They range from $0.07 to $0.39 — a 6× difference for a card with the same name. The set code and collector number printed along the bottom edge are what tell them apart.
| Arena League 2002 | PAL02 3 | — |
| Ugin's Fate | UGIN 97 | $0.39 |
| Battle Royale Box Set | BRB 5 | $0.26 |
| Planechase | HOP 46 | $0.19 |
| World Championship Decks 1999 | WC99 mlp174sb | $0.19 |
| World Championship Decks 1999 | WC99 mlp174 | $0.19 |
| The List | PLST USG-174 | $0.10 |
| World Championship Decks 2000 | WC00 jk174 | $0.07 |
| Khans of Tarkir | KTK 97 | $0.07 |
Not sure which one you are holding? OtterDex reads the set code and collector number off the card and tells you.