Graded Market · 14 completed sales
Magma Basin (Secret) graded prices.
As of August 19, 2026, Magma Basin (Secret) (Brilliant Stars #185) in PSA 10 sells for a median of $37.49, based on 14 real eBay completed sales; the raw copy’s reference price is $2.38 — a 15.8× grading premium at the top grade.
Across Brilliant Stars, PSA 10 copies sell for 18.8× their raw reference price on average (52 cards, 3,014 PSA 10 completed sales tracked).
PSA · Magma Basin (Secret)
| Grade | Median | Sales | vs Raw |
|---|---|---|---|
| Gem Mint 10 | $37.49 | 4 | 15.8× |
| Mint 9 | $11.64 | 6 | 4.9× |
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.