Thundurus-GX SM Black Star Promos #SM133
Thundurus-GX is a Promo Pokémon card from SM Black Star Promos (#SM133), illustrated by 5ban Graphics. It's a Basic GX Lightning-type Pokémon with 180 HP, weak to Fighting ×2. Its current blended market value is $3.45 ungraded, with a PSA 10 worth around $26 — a gem-mint grading premium of roughly 8× the raw value. Prices are aggregated across marketplaces — raw and graded, updated daily and shown in your local currency.
Prices last updated 2 July 2026.
| Grade | Relative value | Price |
|---|---|---|
| PSA 10 | $26$26–$30 | |
| PSA 9 | $14$12–$15 | |
| PSA 8 | $6$4–$12 |
Price history · raw near-mint
Recent sold prices
No recent sold listings tracked.
Population across graders
Should you grade it?
after ~$70.25 grading fee → 7.5× the raw value
| Target grade | Est. value | Grading fee | Net vs raw | Multiple |
|---|---|---|---|---|
| PSA 10 | $26.03 | $70.25 | −$48 | 7.5× |
| PSA 9 | $14.10 | $70.13 | −$59 | 4.1× |
| PSA 8 | $5.60 | $70.05 | −$68 | 1.6× |
⚖️ Risk-adjusted return
Best case isn't the whole story. Weighting every grade by how often it actually happens, across 92 PSA-graded copies:
| Likely outcome | Chance | Value |
|---|---|---|
| PSA 10 | 31.5% | $26.00 |
| PSA 9 | 52.2% | $14.00 |
| PSA ≤8 | 16.3% | $3.00 |
Net = graded value − raw value − grading cost (tier fee + ~$20 round-trip shipping), using PSA fees as of 2026-06-28; the paused PSA Value tier is excluded so this isn't overstated. Gem rate is estimated from cumulative PSA population, which skews toward nicer, resubmitted copies — so it overstates the true grade rate. Treat it as a guide, not a guarantee.
We'll email you when this card's value crosses your target.
Where to buy
Cross-market prices
9% spreadCurrently 9% cheaper on PriceCharting than Cardmarket. These are independent market prices for the same card — a wide gap can mean a buying opportunity. Informational only, not arbitrage advice.
Market signal
Derived from this card's 90-day price history, recent trend and cross-market price gap. Informational, not advice.
🇪🇺 Cardmarket price · Europe
Card text
Pokémon-GX rule: When your Pokémon-GX is Knocked Out, your opponent takes 2 Prize cards.
Card details
More from SM Black Star Promos
Frequently asked questions
How much is Thundurus-GX (SM Black Star Promos #SM133) worth?
As of 2 July 2026, Thundurus-GX from SM Black Star Promos is worth approximately $3.45 ungraded (near-mint), and around $26 in PSA 10 gem mint. Values are blended from real Cardmarket, eBay sold and TCGplayer prices and update daily.
What is the PSA 10 price for Thundurus-GX?
A PSA 10 (gem mint) Thundurus-GX from SM Black Star Promos is worth around $26 — roughly 8× the raw ungraded value of $3.45.
Should I grade my Thundurus-GX?
A PSA 10 sells for about $26 versus $3.45 raw — roughly a 8× uplift. Grading is worth it when that premium comfortably beats the grading fee and the card is clean enough to have a real shot at a 10. See the "Should you grade it?" estimate above for net profit per grade.
Is Thundurus-GX rare?
Thundurus-GX is a Promo card from SM Black Star Promos (card #SM133), illustrated by 5ban Graphics. Its current blended market value is $3.45 ungraded.