Slowpoke & Psyduck-GX #218 from Unified Minds is a holo rare card that currently sells for about $311 ungraded, with graded copies ranging from $241 at grade 7 to $2,150 at grade 10. A grade 10 copy sells for around $2,150, about 6.9× the $311 raw price, so high-grade copies are worth grading.