Arceus & Dialga & Palkia-GX #221 from Cosmic Eclipse is a holo rare card that currently sells for about $417 ungraded, with graded copies ranging from $365 at grade 7 to $3,750 at grade 10. A grade 10 copy sells for around $3,750, about 9× the $417 raw price, so high-grade copies are worth grading.