Gyarados-GX #16 from Hidden Fates is a holo holo_rare card that currently sells for about $4.26 ungraded, with graded copies ranging from $10.00 at grade 7 to $70.00 at grade 10. A grade 10 copy sells for around $70.00, about 16× the $4.26 raw price, so high-grade copies are worth grading.