Gyarados #6 from Pokémon Rumble is a reverse holo common card that currently sells for about $17.52 ungraded, with graded copies ranging from $46.03 at grade 7 to $1,600 at grade 10. A grade 10 copy sells for around $1,600, about 91× the $17.52 raw price, so high-grade copies are worth grading.