11 printings of Prey Upon
They range from $0.09 to $0.35 — 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.
| The List | PLST GRN-143 | $0.35 |
| Eldritch Moon | EMN 166 | $0.28 |
| Duel Decks: Heroes vs. Monsters | DDL 62 | $0.27 |
| Aether Revolt | AER 120 | $0.23 |
| Conspiracy: Take the Crown | CN2 191 | $0.21 |
| Innistrad | ISD 200 | $0.20 |
| Ultimate Masters | UMA 178 | $0.14 |
| Magic 2013 | M13 181 | $0.12 |
| Jumpstart 2022 | J22 710 | $0.11 |
| Guilds of Ravnica | GRN 143 | $0.09 |
Not sure which one you are holding? OtterDex reads the set code and collector number off the card and tells you.