Graded Market · 15 completed sales
Dialga GX (Secret) graded prices.
As of August 4, 2026, Dialga GX (Secret) (Forbidden Light #138) in PSA 10 sells for a median of $569.99, based on 15 real eBay completed sales; the raw copy’s reference price is $75.82 — a 7.5× grading premium at the top grade.
Across Forbidden Light, PSA 10 copies sell for 20.6× their raw reference price on average (22 cards, 156 PSA 10 completed sales tracked).
PSA · Dialga GX (Secret)
| Grade | Median | Sales | vs Raw |
|---|---|---|---|
| Gem Mint 10 | $569.99 | 7 | 7.5× |
| Mint 9 | $85.00 | 5 | 1.1× |
Medians of real eBay completed sales per grade; small sample sizes deserve caution. Prices are dated reference values — cite them with the as-of date above. Attribution: CardIntel (cardintel.io). See the methodology.