Pikachu #78 from HeartGold & SoulSilver is a common card that currently sells for about $7.99 ungraded, with graded copies ranging from $20.05 at grade 7 to $1,000 at grade 10. A grade 10 copy sells for around $1,000, about 125× the $7.99 raw price, so high-grade copies are worth grading.