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

Slowpoke [Master Ball] 18/131

Prismatic Evolutions

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Slowpoke [Master Ball] #18 from Prismatic Evolutions currently trades at $7.60 raw, with PSA 10 copies reaching $139.74 — a 18.4x grade premium. The card has moved up 1.2% over the past 30 days and up 27.4% over 90 days, suggesting sustained buying interest.
Current Prices (USD)
Ungraded
$7.60
PSA 7
$8.25
PSA 8
$12.62
PSA 9
$18.49
PSA 10
$139.74
ACE 10
—
BGS 10 Black
$910.00
CGC 10 Pristine
$74.00
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Raw Price Trend
7d
+2.6%
30d
+1.2%
90d
+27.4%
180d
+90.3%
1y
+43.3%
2y
—
5y
—

Quick price facts

Slowpoke [Master Ball] 18/131 from Prismatic Evolutions has a current raw market value of $7.60.

Current raw value
$7.60
PSA 9 value
$18.49
PSA 10 value
$140
Raw value 7d
+2.6%
Raw value 30d
+1.2%
PSA 10 premium vs raw
18.4× raw
View all cards from Prismatic Evolutions →
Collector Intel
18.4x
Raw → PSA 10
High-risk grade
2.4x
Raw → PSA 9
Grade multiplier
+1.2%
30d Price Move
Rising
Steady
Price Stability
2.6% 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 18x the raw price. The expected value accounts for the realistic probability.
$8
Buy Raw
~$25
Grading Fee
PSA Standard
$140
PSA 10 Value
+$107
Best Case (PSA 10)
if you pull a 10
Grade Multiples vs Raw
PSA 9$182.4x raw
PSA 10$14018.4x 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: $7.60, PSA 9: $18.49, PSA 10: $140 based on recent sold listings. Prices update daily from real eBay sales.
Is Slowpoke [Master Ball] #18 worth grading?+
The PSA 10 price of $140 is 18.4× the raw price of $7.60. After a ~$25 grading fee, a PSA 10 result would net approximately $132 — 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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  • 17 Sep 2026Raw
    tcgplayercompleted-auctions-usednear mint
    $7.60
  • 16 Sep 2026Raw
    ebaycompleted-auctions-usedunknown
    $12.00
  • 16 Sep 2026Raw
    tcgplayercompleted-auctions-usednear mint
    $9.19
  • 15 Sep 2026Raw
    tcgplayercompleted-auctions-usednear mint
    $7.28
  • 14 Sep 2026Raw
    ebaycompleted-auctions-usednear mint
    $8.99