Blastoise-EX XY Black Star Promos #XY30
Sold prices, not asking · Updated 5 July 2026
Confidence medium · How we price →
Blastoise-EX is a Promo Pokémon card from XY Black Star Promos (#XY30), illustrated by Eske Yoshinob. It's a Basic EX Water-type Pokémon with 180 HP, weak to Grass ×2. Its current blended market value is $10.98 ungraded, with a PSA 10 worth around $361 — a gem-mint grading premium of roughly 33× the raw value. Prices are aggregated across marketplaces — raw and graded, updated daily and shown in your local currency.
Prices last updated 5 July 2026.
| Grade | Relative value | Price |
|---|---|---|
| PSA 10pop 121 | 2 sold$361$307–$415 | |
| PSA 9pop 201 | 3 sold$55$47–$63 | |
| PSA 8pop 121 | 2 sold$30$26–$35 | |
| PSA 7pop 74 | 6 sold$20$17–$23 | |
| PSA 6pop 49 | $12$10–$18 |
Price history · Raw
Recent sold prices
Real completed sale prices from Fanatics Collect — weekly and premier auctions plus marketplace Buy It Now sales, refreshed periodically. Grade read from the listing title.
Population across graders
Only 19% of 625 PSA-graded Blastoise-EX copies are a gem-mint 10 (121 of 625) — the rest grade lower.
Full grade breakdown (11 grades)
Should you grade it?
Only 19.4% of copies gem (PSA 10 best case +$276); most land at PSA 9 or below.
| Target grade | Est. value | Grading fee | Net vs raw | Multiple |
|---|---|---|---|---|
| PSA 10 | $360.82 | $73.6 | +$276 | 32.9× |
| PSA 9 | $54.81 | $70.54 | −$27 | 5.0× |
| PSA 8 | $30.13 | $70.29 | −$51 | 2.7× |
⚖️ Risk-adjusted return
Best case isn't the whole story. Weighting every grade by how often it actually happens, across 625 PSA-graded copies:
| Likely outcome | Chance | Value |
|---|---|---|
| PSA 10 | 19.4% | $361.00 |
| PSA 9 | 32.2% | $55.00 |
| PSA ≤8 | 48.5% | $11.00 |
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
Market dataCross-market spread, EU price, momentum & community buzz
Cross-market prices
88% spreadCurrently 88% 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
46% cheaper than the USCard text
Pokémon-EX rule: When a Pokémon-EX has been Knocked Out, your opponent takes 2 Prize cards.
Card details
Other Blastoise-EX cards
There are 6 different Blastoise-EX printings — make sure you're valuing the right one. This is XY Black Star Promos #XY30 (Promo).
More from XY Black Star Promos
Frequently asked questions
How much is Blastoise-EX (XY Black Star Promos #XY30) worth?
As of 5 July 2026, Blastoise-EX from XY Black Star Promos is worth approximately $10.98 ungraded (near-mint), and around $361 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-EX?
A PSA 10 (gem mint) Blastoise-EX from XY Black Star Promos is worth around $361 — roughly 33× the raw ungraded value of $10.98.
Should I grade my Blastoise-EX?
A PSA 10 sells for about $361 versus $10.98 raw — roughly a 33× 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-EX rare?
Blastoise-EX is a Promo card from XY Black Star Promos (card #XY30), illustrated by Eske Yoshinob. Its current blended market value is $10.98 ungraded.