Graded Market · 34 completed sales
Dialga GX (Secret Rare) graded prices.
As of August 22, 2026, Dialga GX (Secret Rare) (Ultra Prism #164) in PSA 10 sells for a median of $359.99, based on 34 real eBay completed sales; the raw copy’s reference price is $45.74 — a 7.9× grading premium at the top grade.
Across Ultra Prism, PSA 10 copies sell for 21.2× their raw reference price on average (30 cards, 225 PSA 10 completed sales tracked).
PSA · Dialga GX (Secret Rare)
| Grade | Median | Sales | vs Raw |
|---|---|---|---|
| Gem Mint 10 | $359.99 | 24 | 7.9× |
| Mint 9 | $90.00 | 5 | 2.0× |
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.