Dark Slowbro #8 from Legendary Collection is a reverse holo holo_rare card that currently sells for about $18.99 ungraded, with graded copies ranging from $29.99 at grade 7 to $2,084 at grade 10. A grade 10 copy sells for around $2,084, about 110× the $18.99 raw price, so high-grade copies are worth grading.