Rayquaza δ #16 from Holon Phantoms is a holo holo_rare card that currently sells for about $254 ungraded, with graded copies ranging from $412 at grade 7 to $4,656 at grade 10. TCGrader's AI has graded 6 copies of Rayquaza δ (Holon Phantoms), averaging 6.2 overall. A grade 10 copy sells for around $4,656, about 18× the $254 raw price, so high-grade copies are worth grading.