19 printings of Tranquility
They range from $0.08 to $30.50 — a 381× difference for a card with the same name. The set code and collector number printed along the bottom edge are what tell them apart.
| Summer Magic / Edgar | SUM 221 | — |
| Seventh Edition | 7ED 276★ | — |
| 30th Anniversary Edition | 30A 513 | — |
| Limited Edition Alpha | LEA 220 | $30.50 |
| Limited Edition Beta | LEB 221 | $9.63 |
| Intl. Collectors' Edition | CEI 221 | $3.83 |
| Collectors' Edition | CED 221 | $3.00 |
| Unlimited Edition | 2ED 221 | $0.93 |
| Pro Tour Collector Set | PTC gb277sb | $0.67 |
| Battle Royale Box Set | BRB 89 | $0.25 |
| Tempest | TMP 261 | $0.17 |
| Revised Edition | 3ED 221 | $0.15 |
| Fourth Edition | 4ED 277 | $0.14 |
| Invasion | INV 217 | $0.13 |
| Classic Sixth Edition | 6ED 259 | $0.12 |
| Mercadian Masques | MMQ 280 | $0.11 |
| Fifth Edition | 5ED 333 | $0.09 |
| Seventh Edition | 7ED 276 | $0.08 |
Not sure which one you are holding? OtterDex reads the set code and collector number off the card and tells you.