Graded Market · 11 completed sales
Thundurus GX - SM133 graded prices.
As of August 20, 2026, Thundurus GX - SM133 (SM Black Star Promos #SM133) in PSA 10 sells for a median of $130.20, based on 11 real eBay completed sales; the raw copy’s reference price is $3.56 — a 36.6× grading premium at the top grade.
Across SM Black Star Promos, PSA 10 copies sell for 34.1× their raw reference price on average (99 cards, 6,076 PSA 10 completed sales tracked).
PSA · Thundurus GX - SM133
| Grade | Median | Sales | vs Raw |
|---|---|---|---|
| Gem Mint 10 | $130.20 | 3 | 36.6× |
| Mint 9 | $20.50 | 5 | 5.8× |
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.