Gastly #177 from Temporal Forces is a illustration_rare card that currently sells for about $92.67 ungraded, with graded copies ranging from $63.00 at grade 7 to $710 at grade 10. TCGrader's AI has graded 12 copies of Gastly (Temporal Forces), averaging 9.1 overall. 92% scored 9 or higher, so clean copies are common and centering usually decides the top grades. A grade 10 copy sells for around $710, about 7.7× the $92.67 raw price, so high-grade copies are worth grading.