8 printings of Kraken's Eye
They range from $0.10 to $0.25 — 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.
| Ninth Edition | 9ED 302★ | — |
| Magic 2010 | M10 213 | $0.25 |
| Darksteel | DST 126 | $0.21 |
| Duels of the Planeswalkers | DPA 93 | $0.17 |
| Magic 2011 | M11 210 | $0.16 |
| Tenth Edition | 10E 329 | $0.14 |
| Magic 2012 | M12 211 | $0.10 |
Not sure which one you are holding? OtterDex reads the set code and collector number off the card and tells you.