Dark Blastoise #20 from Team Rocket is a rare card that currently sells for about $26.49 ungraded, with graded copies ranging from $40.79 at grade 7 to $2,500 at grade 10. TCGrader's AI has graded 8 copies of Dark Blastoise (Team Rocket), averaging 8.5 overall. 38% scored 9 or higher, so a strong copy is achievable but far from guaranteed. A grade 10 copy sells for around $2,500, about 94× the $26.49 raw price, so high-grade copies are worth grading.