Which Guzzlord GX do you have?
Same name, 7× the price: $3.77 to $27 raw. The difference is printed on the card — it is just not somewhere most people think to look.
Transdimensional Beast · #058
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.
$27
77% gem
GX Ultra Shiny · #232
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.
$17
77% gem
Hidden Fates · #SV71
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.
$16
64% gem
Alternate Art Promos · #63a
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.
$9.99
no PSA data
Transdimensional Beast · #053
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.
$8.51
79% gem
Crimson Invasion · #63
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.
$5.89
41% gem
Transdimensional Beast · #033
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.
$4.35
71% gem
GX Battle Boost · #065
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.
$3.77
87% 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.