Dialga-GX #100 from Ultra Prism is a holo holo_rare card that currently sells for about $6.99 ungraded, with graded copies ranging from $10.02 at grade 7 to $63.00 at grade 10. A grade 10 copy sells for around $63.00, about 9× the $6.99 raw price, so high-grade copies are worth grading.