15 printings of Rupture Spire
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.
| Premium Deck Series: Slivers | H09 33 | — |
| Commander Anthology | CMA 267 | $0.35 |
| Commander 2020 | C20 304 | $0.34 |
| Commander 2011 | CMD 285 | $0.30 |
| Commander 2013 | C13 315 | $0.27 |
| Commander 2016 | C16 319 | $0.26 |
| Duel Decks: Ajani vs. Nicol Bolas | DDH 75 | $0.19 |
| Commander Anthology Volume II | CM2 263 | $0.17 |
| Planechase 2012 | PC2 124 | $0.15 |
| Commander Legends | CMR 490 | $0.15 |
| Core Set 2019 | M19 255 | $0.13 |
| Conflux | CON 144 | $0.13 |
| Commander Legends | CMR 355 | $0.13 |
| Planechase Anthology | PCA 124 | $0.09 |
Not sure which one you are holding? OtterDex reads the set code and collector number off the card and tells you.