Venusaur-EX #XY123 from XY Black Star Promos is a reverse holo promo card that currently sells for about $125 ungraded, with graded copies ranging from $237 at grade 7 to $10,000 at grade 10. TCGrader's AI has graded 7 copies of Venusaur-EX (XY Black Star Promos), averaging 8.5 overall. Only 29% scored 9 or higher, so genuinely mint copies of this card are scarce. A grade 10 copy sells for around $10,000, about 80× the $125 raw price, so high-grade copies are worth grading.