About Dialga GX (Secret)
Dialga GX (Secret) from the Forbidden Light set (#138) is a Pokemon trading card released in 2018. It has a rarity of Rare Rainbow. Current fair market values for Dialga GX (Secret) are PSA 10: $408.62, PSA 9: $78, PSA 8: $41.50, Raw: $64.02. The most recent PSA 10 sale was $459 on May 13, 2026, with 9 sales tracked in the last 30 days. The most recent PSA 9 sale was $71 on April 23, 2026. A raw (ungraded) copy last sold for $88.31 on February 9, 2026. 74 copies of Dialga GX (Secret) sold in the last 30 days across eBay, Goldin, and other marketplaces. CardIndex has tracked 14 total sales across all grades for this card. There are currently 38 active listings for Dialga GX (Secret).
