Kingdra-GX SM Black Star Promos #SM155
Sold prices, not asking · Updated 5 July 2026
Confidence medium · How we price →
Kingdra-GX is a Promo Pokémon card from SM Black Star Promos (#SM155), illustrated by 5ban Graphics. It's a Stage 2 GX Water-type Pokémon with 230 HP, evolving from Seadra, weak to Grass ×2. Its current blended market value is $15.36 ungraded, with a PSA 10 worth around $150 — a gem-mint grading premium of roughly 10× 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 365 | 10 sold$150$127–$172 | |
| PSA 9pop 241 | 6 sold$38$32–$43 | |
| PSA 8pop 57 | $13$13–$13 |
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 53% of 691 PSA-graded Kingdra-GX copies are a gem-mint 10 (365 of 691) — the rest grade lower.
Full grade breakdown (9 grades)
Should you grade it?
Only 52.8% of copies gem (PSA 10 best case +$63); most land at PSA 9 or below.
| Target grade | Est. value | Grading fee | Net vs raw | Multiple |
|---|---|---|---|---|
| PSA 10 | $149.74 | $71.49 | +$63 | 9.7× |
| PSA 9 | $37.52 | $70.37 | −$48 | 2.4× |
| PSA 8 | $13.00 | $70.12 | −$72 | 0.8× |
⚖️ Risk-adjusted return
Best case isn't the whole story. Weighting every grade by how often it actually happens, across 691 PSA-graded copies:
| Likely outcome | Chance | Value |
|---|---|---|
| PSA 10 | 52.8% | $150.00 |
| PSA 9 | 34.9% | $38.00 |
| PSA ≤8 | 12.3% | $15.00 |
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
91% spreadCurrently 91% cheaper on Cardmarket 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
48% cheaper than the USCard text
Evolves from Seadra.
Pokémon-GX rule: When your Pokémon-GX is Knocked Out, your opponent takes 2 Prize cards.
Card details
Other Kingdra-GX cards
There are 3 different Kingdra-GX printings — make sure you're valuing the right one. This is SM Black Star Promos #SM155 (Promo).
More from SM Black Star Promos
Frequently asked questions
How much is Kingdra-GX (SM Black Star Promos #SM155) worth?
As of 5 July 2026, Kingdra-GX from SM Black Star Promos is worth approximately $15.36 ungraded (near-mint), and around $150 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 Kingdra-GX?
A PSA 10 (gem mint) Kingdra-GX from SM Black Star Promos is worth around $150 — roughly 10× the raw ungraded value of $15.36.
Should I grade my Kingdra-GX?
A PSA 10 sells for about $150 versus $15.36 raw — roughly a 10× 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 Kingdra-GX rare?
Kingdra-GX is a Promo card from SM Black Star Promos (card #SM155), illustrated by 5ban Graphics. Its current blended market value is $15.36 ungraded.