15 printings of Opulent Palace
They range from $0.28 to $0.76 — a 3× difference for a card with the same name. The set code and collector number printed along the bottom edge are what tell them apart.
| Fallout | PIP 806 | — |
| Commander Anthology Volume II | CM2 260 | $0.76 |
| Fallout | PIP 278 | $0.59 |
| Outlaws of Thunder Junction Commander | OTC 307 | $0.51 |
| Commander Masters | CMM 1017 | $0.42 |
| Commander 2017 | C17 267 | $0.41 |
| Dominaria United Commander | DMC 223 | $0.41 |
| Lorwyn Eclipsed Commander | ECC 157 | $0.38 |
| Tarkir: Dragonstorm | TDM 264 | $0.35 |
| Commander 2020 | C20 295 | $0.34 |
| Commander 2016 | C16 313 | $0.32 |
| Khans of Tarkir | KTK 238 | $0.31 |
| The List | PLST KTK-238 | $0.29 |
| The List | PLST OTC-307 | $0.28 |
Not sure which one you are holding? OtterDex reads the set code and collector number off the card and tells you.