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Seaking [Master Ball] #21 Pokémon card from Prismatic Evolutions

Seaking [Master Ball] 21/131

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Seaking [Master Ball] #21 from Prismatic Evolutions currently trades at $3.46 raw, with PSA 10 copies reaching $108.50 — a 31.4x grade premium. The card has moved up 9.1% over the past 30 days and up 26.7% over 90 days, suggesting sustained buying interest.
Current Prices (USD)
Ungraded
$3.46
PSA 7
$12.87
PSA 8
$12.87
PSA 9
$17.70
PSA 10
$108.50
ACE 10
—
BGS 10 Black
$705.00
CGC 10 Pristine
$47.00
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Raw Price Trend
7d
-0.3%
30d
+9.1%
90d
+26.7%
180d
+15.3%
1y
-11.1%
2y
—
5y
—

Quick price facts

Seaking [Master Ball] 21/131 from Prismatic Evolutions has a current raw market value of $3.46.

Current raw value
$3.46
PSA 9 value
$17.70
PSA 10 value
$109
Raw value 30d
+9.1%
PSA 10 premium vs raw
31.4× raw
View all cards from Prismatic Evolutions →
Collector Intel
31.4x
Raw → PSA 10
High-risk grade
5.1x
Raw → PSA 9
Grade multiplier
+9.1%
30d Price Move
Rising
Steady
Price Stability
0.3% swing this week

Calculated from price history, PSA population data, and market trends. Not financial advice.

Grading Calculator

Based on PSA Standard tier (~$25 USD). Assumes a perfect PSA 10 result — actual outcome depends on card condition.

⚠️ High-variance grade. PSA 10 is 31x the raw price. The expected value accounts for the realistic probability.
$3
Buy Raw
~$25
Grading Fee
PSA Standard
$109
PSA 10 Value
+$80
Best Case (PSA 10)
if you pull a 10
Grade Multiples vs Raw
PSA 9$185.1x raw
PSA 10$10931.4x raw

Frequently asked questions

How much is Seaking [Master Ball] #21 from Prismatic Evolutions worth?+
Seaking [Master Ball] #21 from Prismatic Evolutions is currently worth Raw: $3.46, PSA 9: $17.70, PSA 10: $109 based on recent sold listings. Prices update daily from real eBay sales.
Is Seaking [Master Ball] #21 worth grading?+
The PSA 10 price of $109 is 31.4× the raw price of $3.46. After a ~$25 grading fee, a PSA 10 result would net approximately $105 — assuming the card grades a 10.
Where do PokePrices Seaking [Master Ball] #21 prices come from?+
Prices are tracked nightly from real sold listings on PriceCharting (raw, PSA 9 and PSA 10). PSA population data is sourced from PSA's public reports. We do not use asking prices — only confirmed sales.

Recent verified sales

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  • 2 Oct 2026Raw
    tcgplayercompleted-auctions-usednear mint
    $3.49
  • 28 Sep 2026Raw
    ebaycompleted-auctions-usednear mint
    $2.00
  • 27 Sep 2026Raw
    tcgplayercompleted-auctions-usednear mint
    $3.70
  • 26 Sep 2026Raw
    tcgplayercompleted-auctions-usednear mint
    $3.81
  • 25 Sep 2026Raw
    ebaycompleted-auctions-usednear mint
    $6.46