18 printings of Boros Guildgate
They range from $0.08 to $0.34 — 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.
| Commander 2017 | C17 240 | $0.34 |
| Commander 2019 | C19 234 | $0.34 |
| Commander 2015 | C15 280 | $0.31 |
| Commander Legends | CMR 478 | $0.28 |
| Modern Masters 2017 | MM3 231 | $0.28 |
| Ravnica Remastered | RVR 274 | $0.28 |
| Commander Anthology Volume II | CM2 240 | $0.24 |
| The List | PLST GRN-243 | $0.21 |
| Gatecrash | GTC 239 | $0.20 |
| Ravnica Remastered | RVR 398 | $0.18 |
| Guilds of Ravnica | GRN 243 | $0.17 |
| Zendikar Rising Commander | ZNC 123 | $0.16 |
| Dragon's Maze | DGM 147 | $0.16 |
| Ravnica: Clue Edition | CLU 232 | $0.16 |
| Guilds of Ravnica | GRN 244 | $0.14 |
| Foundations | FDN 684 | $0.13 |
| Duel Decks: Heroes vs. Monsters | DDL 33 | $0.08 |
Not sure which one you are holding? OtterDex reads the set code and collector number off the card and tells you.