15 printings of Boomerang
They range from $0.12 to $2.30 — a 19× difference for a card with the same name. The set code and collector number printed along the bottom edge are what tell them apart.
| Seventh Edition | 7ED 64★ | — |
| Eighth Edition | 8ED 63★ | — |
| Ninth Edition | 9ED 66★ | — |
| DCI Promos | DCI 4 | — |
| Legends | LEG 48 | $2.30 |
| Duels of the Planeswalkers | DPA 2 | $0.36 |
| Chronicles | CHR 16 | $0.32 |
| Seventh Edition | 7ED 64 | $0.27 |
| Mirage | MIR 56 | $0.26 |
| Ninth Edition | 9ED 66 | $0.24 |
| Tenth Edition | 10E 70 | $0.23 |
| Eighth Edition | 8ED 63 | $0.22 |
| The List | PLST MIR-56 | $0.21 |
| Fifth Edition | 5ED 75 | $0.12 |
Not sure which one you are holding? OtterDex reads the set code and collector number off the card and tells you.