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Slowpoke [Master Ball] #18 Pokémon card from Prismatic Evolutions

Slowpoke [Master Ball] 18/131

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Slowpoke [Master Ball] #18 from Prismatic Evolutions currently trades at $6.99 raw, with PSA 10 copies reaching $152.50 — a 21.8x grade premium. The card has moved up 14.2% over the past 30 days and up 47.5% over 90 days, suggesting sustained buying interest.
Current Prices (USD)
Ungraded
$6.99
PSA 7
$8.25
PSA 8
$10.00
PSA 9
$18.50
PSA 10
$152.50
ACE 10
—
BGS 10 Black
$990.00
CGC 10 Pristine
$74.00
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Raw Price Trend
7d
+6.1%
30d
+14.2%
90d
+47.5%
180d
+45.3%
1y
+40.1%
2y
—
5y
—

Quick price facts

Slowpoke [Master Ball] 18/131 from Prismatic Evolutions has a current raw market value of $6.99.

Current raw value
$6.99
PSA 9 value
$18.50
PSA 10 value
$153
Raw value 7d
+6.1%
Raw value 30d
+14.2%
PSA 10 premium vs raw
21.8× raw
View all cards from Prismatic Evolutions →
Collector Intel
21.8x
Raw → PSA 10
High-risk grade
2.6x
Raw → PSA 9
Grade multiplier
+14.2%
30d Price Move
Rising
Moderate
Price Stability
6.1% 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 22x the raw price. The expected value accounts for the realistic probability.
$7
Buy Raw
~$25
Grading Fee
PSA Standard
$153
PSA 10 Value
+$121
Best Case (PSA 10)
if you pull a 10
Grade Multiples vs Raw
PSA 9$192.6x raw
PSA 10$15321.8x raw

Frequently asked questions

How much is Slowpoke [Master Ball] #18 from Prismatic Evolutions worth?+
Slowpoke [Master Ball] #18 from Prismatic Evolutions is currently worth Raw: $6.99, PSA 9: $18.50, PSA 10: $153 based on recent sold listings. Prices update daily from real eBay sales.
Is Slowpoke [Master Ball] #18 worth grading?+
The PSA 10 price of $153 is 21.8× the raw price of $6.99. After a ~$25 grading fee, a PSA 10 result would net approximately $146 — assuming the card grades a 10.
Where do PokePrices Slowpoke [Master Ball] #18 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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  • 29 Jul 2026Raw
    tcgplayercompleted-auctions-usednear mint
    $6.97
  • 28 Jul 2026Raw
    tcgplayercompleted-auctions-usednear mint
    $6.00
  • 26 Jul 2026Raw
    ebaycompleted-auctions-usednear mint
    $6.99
  • 25 Jul 2026Raw
    ebaycompleted-auctions-usednear mint
    $7.25
  • 24 Jul 2026Raw
    tcgplayercompleted-auctions-usednear mint
    $7.10