Which Aggron ex 1st Edition Holofoil do you have?
Same name, 26× the price: $5.47 to $142 raw. The difference is printed on the card — it is just not somewhere most people think to look.
Miracle of the Desert · #046
Check the set symbol in the lower right of the illustration, and the copyright year along the bottom edge. Those two identify the print run on every card that has them.
$142
41% gem
Gaia Volcano · #075
Check the set symbol in the lower right of the illustration, and the copyright year along the bottom edge. Those two identify the print run on every card that has them.
$56
60% gem
Miracle Crystal · #066
Check the set symbol in the lower right of the illustration, and the copyright year along the bottom edge. Those two identify the print run on every card that has them.
$50
36% gem
Gaia Volcano · #045
Check the set symbol in the lower right of the illustration, and the copyright year along the bottom edge. Those two identify the print run on every card that has them.
$5.47
84% gem
We have no hand-checked note for these printings yet, so the guidance above is the general rule rather than something specific to this card.
Prices are raw market value. Click a printing for its full grading verdict — the gem rate, the fees and whether it beats selling raw.