Dragonair #18 from Base Set is a rare card that currently sells for about $11.14 ungraded, with graded copies ranging from $34.35 at grade 7 to $455 at grade 10. TCGrader's AI has graded 7 copies of Dragonair (Base Set), averaging 7.5 overall. A grade 10 copy sells for around $455, about 41× the $11.14 raw price, so high-grade copies are worth grading.