Slowpoke #81 from HeartGold & SoulSilver is a reverse holo common card that currently sells for about $1.98 ungraded, with graded copies ranging from $12.50 at grade 9 to $57.29 at grade 10. A grade 10 copy sells for around $57.29, about 29× the $1.98 raw price, so high-grade copies are worth grading.