Psyduck #104 from Aquapolis is a common card that currently sells for about $175 ungraded, with graded copies ranging from $350 at grade 7 to $8,546 at grade 10. TCGrader's AI has graded 4 copies of Psyduck (Aquapolis), averaging 6.7 overall. A grade 10 copy sells for around $8,546, about 49× the $175 raw price, so high-grade copies are worth grading.