M Salamence-EX #XY171 from XY Black Star Promos is a reverse holo promo card that currently sells for about $90.00 ungraded, with graded copies ranging from $103 at grade 7 to $622 at grade 10. TCGrader's AI has graded 3 copies of M Salamence-EX (XY Black Star Promos), averaging 7.4 overall. 33% scored 9 or higher, so a strong copy is achievable but far from guaranteed. A grade 10 copy sells for around $622, about 6.9× the $90.00 raw price, so high-grade copies are worth grading.