6 printings of Guard Gomazoa
They range from $0.27 to $0.87 — 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.
| Commander 2011 | CMD 49 | $0.87 |
| Planechase Anthology | PCA 17 | $0.48 |
| Commander 2013 | C13 45 | $0.36 |
| Rise of the Eldrazi | ROE 70 | $0.31 |
| Planechase 2012 | PC2 17 | $0.27 |
Not sure which one you are holding? OtterDex reads the set code and collector number off the card and tells you.