Slowpoke & Psyduck-GX #218 from Unified Minds is a holo rare card that currently sells for about $358 ungraded, with graded copies ranging from $238 at grade 7 to $2,101 at grade 10. A grade 10 copy sells for around $2,101, about 5.9× the $358 raw price, so high-grade copies are worth grading.