Slowking #12 from HeartGold & SoulSilver is a reverse holo holo_rare card that currently sells for about $14.45 ungraded, with graded copies ranging from $13.49 at grade 7 to $228 at grade 10. A grade 10 copy sells for around $228, about 16× the $14.45 raw price, so high-grade copies are worth grading.