Blastoise-GX SM Black Star Promos #SM189
Blastoise-GX is a Promo Pokémon card from SM Black Star Promos (#SM189), illustrated by sadaji. It's a Stage 2 GX Water-type Pokémon with 240 HP, evolving from Wartortle, weak to Grass ×2. Its current blended market value is $21.84 ungraded, with a PSA 10 worth around $244 — a gem-mint grading premium of roughly 11× 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 | 8 sold$244$207–$280 | |
| PSA 9 | 13 sold$40$34–$46 | |
| PSA 8 | 7 sold$26$22–$30 | |
| PSA 7 | 2 sold$20$17–$22 |
Price history · raw near-mint
Recent sold prices
Real completed hammer prices from Fanatics Collect weekly and premier auctions, refreshed periodically. Grade read from the listing title.
Should you grade it?
after ~$72.43 grading fee → 11.2× the raw value
| Target grade | Est. value | Grading fee | Net vs raw | Multiple |
|---|---|---|---|---|
| PSA 10 | $243.83 | $72.43 | +$150 | 11.2× |
| PSA 9 | $39.99 | $70.39 | −$52 | 1.8× |
| PSA 8 | $25.73 | $70.25 | −$66 | 1.2× |
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. Real outcome depends on the grade achieved; PSA 10 is best-case.
We'll email you when this card's value crosses your target.
Where to buy
Cross-market prices
21% spreadCurrently 21% cheaper on PriceCharting than TCGplayer. 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
14% cheaper than the USCard text
Evolves from Wartortle.
Pokémon-GX rule: When your Pokémon-GX is Knocked Out, your opponent takes 2 Prize cards.
Card details
Other Blastoise-GX cards
There are 3 different Blastoise-GX printings — make sure you're valuing the right one. This is SM Black Star Promos #SM189 (Promo).
More from SM Black Star Promos
Frequently asked questions
How much is Blastoise-GX (SM Black Star Promos #SM189) worth?
As of 2 July 2026, Blastoise-GX from SM Black Star Promos is worth approximately $21.84 ungraded (near-mint), and around $244 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 Blastoise-GX?
A PSA 10 (gem mint) Blastoise-GX from SM Black Star Promos is worth around $244 — roughly 11× the raw ungraded value of $21.84.
Should I grade my Blastoise-GX?
A PSA 10 sells for about $244 versus $21.84 raw — roughly a 11× 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 Blastoise-GX rare?
Blastoise-GX is a Promo card from SM Black Star Promos (card #SM189), illustrated by sadaji. Its current blended market value is $21.84 ungraded.