Dark Gengar #6 from Neo Destiny is a unlimited holo holo_rare card that currently sells for about $376 ungraded, with graded copies ranging from $885 at grade 7 to $19,900 at grade 10. TCGrader's AI has graded 5 copies of Dark Gengar (Neo Destiny), averaging 7 overall. A grade 10 copy sells for around $19,900, about 53× the $376 raw price, so high-grade copies are worth grading.