Misty's Goldeen #30 from Gym Heroes is a holo rare card that currently sells for about $6.99 ungraded, with graded copies ranging from $9.99 at grade 7 to $23.00 at grade 10. A grade 10 copy sells for around $23.00, about 3.3× the $6.99 raw price, so high-grade copies are worth grading.