Miraidon ex #143 from Scarlet & Violet Black Star Promos is a reverse holo promo card that currently sells for about $4.64 ungraded, with graded copies ranging from $16.10 at grade 9 to $18.00 at grade 9.5. A grade 9.5 copy sells for around $18.00, about 3.9× the $4.64 raw price, so high-grade copies are worth grading.