Psyduck #104 from Aquapolis is a common card that currently sells for about $174 ungraded, with graded copies ranging from $263 at grade 7 to $1,450 at grade 10. TCGrader's AI has graded 4 copies of Psyduck (Aquapolis), averaging 6.7 overall. A grade 10 copy sells for around $1,450, about 8.3× the $174 raw price, so high-grade copies are worth grading.