Slaking V #58 from Pokémon GO is a holo holo_rare card that currently sells for about $1.35 ungraded, with graded copies ranging from $9.99 at grade 9 to $39.99 at grade 10. A grade 10 copy sells for around $39.99, about 30× the $1.35 raw price, so high-grade copies are worth grading.