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Koffing [1999-2000] #51 Pokémon card from Base Set

Koffing [1999-2000] 51/102

Base Set

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Koffing [1999-2000] #51 from Base Set currently trades at $3.26 raw, with PSA 10 copies reaching $97.57 — a 29.9x grade premium. The card has moved down 0.9% over the past 30 days and down 3.3% over 90 days, suggesting continued softness.
Current Prices (USD)
Ungraded
$3.26
PSA 7
$13.51
PSA 8
$29.39
PSA 9
$36.05
PSA 10
$97.57
ACE 10
—
BGS 10 Black
$635.00
CGC 10 Pristine
$106.00
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Raw Price Trend
7d
+0.0%
30d
-0.9%
90d
-3.3%
180d
+23.5%
1y
-27.1%
2y
—
5y
—

Quick price facts

Koffing [1999-2000] 51/102 from Base Set has a current raw market value of $3.26.

Current raw value
$3.26
PSA 9 value
$36.05
PSA 10 value
$97.57
PSA 10 premium vs raw
29.9× raw
View all cards from Base Set →
Collector Intel
29.9x
Raw → PSA 10
High-risk grade
11.1x
Raw → PSA 9
Grade multiplier
-0.9%
30d Price Move
Falling
Steady
Price Stability
0.0% 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 30x the raw price. The expected value accounts for the realistic probability.
$3
Buy Raw
~$25
Grading Fee
PSA Standard
$98
PSA 10 Value
+$69
Best Case (PSA 10)
if you pull a 10
Grade Multiples vs Raw
PSA 9$3611.1x raw
PSA 10$9829.9x raw

Frequently asked questions

How much is Koffing [1999-2000] #51 from Base Set worth?+
Koffing [1999-2000] #51 from Base Set is currently worth Raw: $3.26, PSA 9: $36.05, PSA 10: $97.57 based on recent sold listings. Prices update daily from real eBay sales.
Is Koffing [1999-2000] #51 worth grading?+
The PSA 10 price of $97.57 is 29.9× the raw price of $3.26. After a ~$25 grading fee, a PSA 10 result would net approximately $94.31 — assuming the card grades a 10.
Where do PokePrices Koffing [1999-2000] #51 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 Jul 2026Graded
    ebaycompleted-auctions-cibunknown
    $13.48
  • 5 Jul 2026Graded
    ebaycompleted-auctions-gradedunknown
    $36.05
  • 6 May 2026Raw
    ebaycompleted-auctions-usedunknown
    $1.19
  • 4 May 2026Raw
    ebaycompleted-auctions-usedlightly played
    $5.99
  • 2 May 2026Raw
    ebaycompleted-auctions-usedunknown
    $3.25