Gengar #20 from Fossil is a rare card that currently sells for about $25.00 ungraded, with graded copies ranging from $90.00 at grade 7 to $1,900 at grade 10. TCGrader's AI has graded 6 copies of Gengar (Fossil), averaging 7.4 overall. A grade 10 copy sells for around $1,900, about 76× the $25.00 raw price, so high-grade copies are worth grading.