19 printings of Scavenging Ooze
They range from $0.19 to $6.47 — a 34× difference for a card with the same name. The set code and collector number printed along the bottom edge are what tell them apart.
| Core Set 2021 Promos | PM21 204s | — |
| Love Your LGS 2021 | PLG21 5 | — |
| Foundations Promos | PFDN 232s | — |
| Duels of the Planeswalkers 2014 Promos | PDP14 3 | — |
| Secret Lair Drop | SLD 135 | $6.47 |
| Core Set 2021 | M21 318 | $0.55 |
| The List | PLST CMD-170 | $0.48 |
| Magic 2014 | M14 195 | $0.44 |
| Core Set 2021 Promos | PM21 204p | $0.43 |
| Commander 2011 | CMD 170 | $0.38 |
| Core Set 2021 | M21 204 | $0.37 |
| Phyrexia: All Will Be One Commander | ONC 112 | $0.35 |
| Commander Anthology Volume II | CM2 143 | $0.33 |
| Duskmourn: House of Horror Commander | DSC 196 | $0.29 |
| Modern Masters 2017 | MM3 134 | $0.28 |
| Foundations | FDN 232 | $0.26 |
| New Capenna Commander | NCC 309 | $0.24 |
| Commander 2016 | C16 166 | $0.19 |
Not sure which one you are holding? OtterDex reads the set code and collector number off the card and tells you.