Giovanni's Gyarados #5 from Gym Challenge is a holo holo_rare card that currently sells for about $84.13 ungraded, with graded copies ranging from $250 at grade 7 to $2,799 at grade 10. TCGrader's AI has graded 4 copies of Giovanni's Gyarados (Gym Challenge), averaging 7.6 overall. A grade 10 copy sells for around $2,799, about 33× the $84.13 raw price, so high-grade copies are worth grading.