Rayquaza δ #16 from Holon Phantoms is a holo holo_rare card that currently sells for about $264 ungraded, with graded copies ranging from $415 at grade 7 to $22,000 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 $22,000, about 83× the $264 raw price, so high-grade copies are worth grading.