Misty's Magikarp #88 from Gym Challenge is a 1st edition common card that currently sells for about $9.99 ungraded, with graded copies ranging from $20.50 at grade 7 to $32.00 at grade 10. A grade 10 copy sells for around $32.00, about 3.2× the $9.99 raw price, so high-grade copies are worth grading.