11 printings of Thermo-Alchemist
They range from $0.16 to $0.93 — 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.
| Innistrad: Double Feature | DBL 164 | $0.93 |
| Innistrad Remastered | INR 403 | $0.51 |
| Innistrad Remastered | INR 174 | $0.36 |
| Jumpstart | JMP 365 | $0.32 |
| Innistrad: Midnight Hunt | MID 164 | $0.32 |
| Jumpstart 2022 | J22 613 | $0.28 |
| Ultimate Masters | UMA 151 | $0.23 |
| Eldritch Moon | EMN 147 | $0.20 |
| Starter Commander Decks | SCD 162 | $0.18 |
| The List | PLST EMN-147 | $0.16 |
Not sure which one you are holding? OtterDex reads the set code and collector number off the card and tells you.