9 printings of Telepathy
They range from $0.49 to $1.86 — 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.
| Seventh Edition | 7ED 102★ | — |
| Ninth Edition | 9ED 101★ | — |
| Eighth Edition | 8ED 105★ | — |
| Seventh Edition | 7ED 102 | $1.86 |
| Urza's Saga | USG 102 | $1.35 |
| Magic 2010 | M10 74 | $0.90 |
| Eighth Edition | 8ED 105 | $0.82 |
| Tenth Edition | 10E 113 | $0.49 |
Not sure which one you are holding? OtterDex reads the set code and collector number off the card and tells you.