Arceus & Dialga & Palkia-GX #258 from Cosmic Eclipse is a reverse holo rare card that currently sells for about $70.00 ungraded, with graded copies ranging from $40.46 at grade 7 to $191 at grade 10. A grade 10 copy sells for around $191, about 2.7× the $70.00 raw price, so high-grade copies are worth grading.