Which Trainers' Mail do you have?
Same name, 6× the price: $2.08 to $13 raw. The difference is printed on the card — it is just not somewhere most people think to look.
Premium Champion Pack · #102
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.
$13
no PSA data
S-P Promos · #344
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.
$8.75
80% gem
The Best of XY · #113
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.
$4.73
75% gem
Roaring Skies · #92
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.
$2.08
52% gem
Ultra Sun & Ultra Moon Deck Build Boxes · #017
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.
—
no PSA data
SV-P Promos · #135
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.
—
no PSA data
M-P Promos · #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.
—
no PSA data
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.