Misty's Poliwrath #31 from Gym Heroes is a 1st edition holo rare card that currently sells for about $19.95 ungraded, with graded copies ranging from $13.49 at grade 7 to $188 at grade 10. A grade 10 copy sells for around $188, about 9.4× the $19.95 raw price, so high-grade copies are worth grading.