Gym Challenge · 1st Edition

Koga's Ekans #77, 1st Edition, Gym Challenge

Card number: #77/132
Rarity: Common
Finish: Non-Holo

Gym Challenge 1st EditionGYC77F:EN

TKRGYC77F:EN-P9

Grading toolPro

TCGBerg fair value· PSA 9

$36

Our estimate of this card's fair value, calculated from recorded sales.

Sales evidenceVery strong

30D performance8.4%

30D: ↓ 8.4%
YTD: ↑ 21.8%
Market cap: $8.1K
Volatility: 4.9%

Last sale (Sep 12, 2026)Last sale

$33

PSA 9 · Sep 12, 2026

7.3% below TCGBerg fair value

5-sale avg

$38

last 5 sales

Population · PSA 9

227

graded copies

TCGBerg fair value · PSA 9

$36

30D8.4%YTD21.8%

Sales evidenceVery strong

Market cap

$8.1K

fair value x population

Population

227

graded copies

Last sale

$33

-7.3% vs fair

5-sale avg

$38

recent sales

GradingPro

Price history

Open terminalPro

Weekly fair value for PSA 9. Shaded area is the confidence band: how precisely we can pin the value; it tightens as more sales confirm it. Dots are individual sales.

TCGBerg fair value · PSA 9Sale below fairSale above fairOutlier

Oct 12, 202552 weekly points · 24 salesSep 28, 2026

Active listings on eBay

PSA 9 · eBay

Affiliate links: TCGBerg may earn a commission on purchases made through these listings.

Behind the scenes

What goes into this price, and how much we know.

Recent sales10 tracked

Most recent transactions. From public auction comps and dealer reporting. Showing 10 of 10; delta vs fair value is the difference between the sale price and the grade's quoted fair value on that date.

Date	Grade	Price	Source	vs TCGBerg FV
Sep 23, 2026	Raw	$5	tcgplayer	27.0%
Sep 22, 2026	PSA8	$18	ebay	12.6%
Sep 12, 2026	PSA9	$33	ebay	7.0%
Sep 11, 2026	PSA9	$36	ebay	0.1%
Sep 9, 2026	Raw	$2	tcgplayer	41.8%
Sep 8, 2026	Raw	$4	tcgplayer	16.7%
Sep 7, 2026	PSA9	$35	ebay	1.4%
Sep 7, 2026	Raw	$3	tcgplayer	1.8%
Aug 31, 2026	PSA10	$136	ebay	19.6%
Aug 27, 2026	PSA8	$26	ebay	14.6%

$5
Sep 23, 2026 · via tcgplayer
Rawversus fair value, up 27.0%
$18
Sep 22, 2026 · via ebay
PSA8versus fair value, down 12.6%
$33
Sep 12, 2026 · via ebay
PSA9versus fair value, down 7.0%
$36
Sep 11, 2026 · via ebay
PSA9versus fair value, up 0.1%
$2
Sep 9, 2026 · via tcgplayer
Rawversus fair value, down 41.8%
$4
Sep 8, 2026 · via tcgplayer
Rawversus fair value, up 16.7%
$35
Sep 7, 2026 · via ebay
PSA9versus fair value, down 1.4%
$3
Sep 7, 2026 · via tcgplayer
Rawversus fair value, up 1.8%
$136
Aug 31, 2026 · via ebay
PSA10versus fair value, down 19.6%
$26
Aug 27, 2026 · via ebay
PSA8versus fair value, up 14.6%

All grades matrix

Every grade we track for this printing. Click any column header to sort; the rightmost column jumps you to listings for that grade.

CGC7$22
1d 0.1%7d 0.7%30d -
Pop
5
Mcap
-
Evidence
Sparse
Last
-
CGC6$17
1d 1.6%7d 0.4%30d -
Pop
2
Mcap
-
Evidence
Sparse
Last
-
PSA10$159
1d 0.3%7d 2.8%30d 3.8%
Pop
142
Mcap
$22.6K
Evidence
Limited
Last
$136


CGC7	$22	5	-	0.1%	0.7%	-	-	-	Sparse	-
CGC6	$17	2	-	1.6%	0.4%	-	-	-	Sparse	-
PSA10	$159	142	$22.6K	0.3%	2.8%	3.8%	0.7%	162.9%	Limited	$1364w ago
PSA9	$36	227	$8.1K	0.1%	0.6%	8.4%	4.6%	40.2%	Very strong	$332w ago
PSA8	$21	44	$907	0.1%	17.7%	10.1%	18.4%	43.1%	Strong	$186d ago
PSA7	$20	9	$183	0.2%	0.5%	7.7%	0.3%	58.1%	Sparse	-
PSA6	$15	6	$90	1.1%	1.2%	8.8%	1.5%	31.8%	Sparse	-
Raw	$4	-	-	-	3.8%	7.3%	-	-	Very strong	$55d ago

Price spectrum

Where the current price sits relative to recent sales and active listings, and how each reference point compares to TCGBerg fair value. The bar spans $20 to $112; it shades green below fair value to red above, saturating at ±25%.

TCGBerg fair value

$36

−25%

$27

$36

+25%

$44

+216%

$112

$20$36$112

LowFairHigh

Last sale
$33
7.3% below fairSep 12, 2026
Lowest / median / highest ask
$106
197.9% above fairlowest active ask

Last sale was 7.3% below TCGBerg fair value, the best listing right now sits 197.9% above fair.

TCGBerg fair value by grade

Value at each grade and ungraded condition, on a log scale that spans the full range from raw (Damaged) at $0.78 up to gem-mint at $159. Log scale. Tap a row to switch the whole page.

Raw NM$3.55Ungraded · TCGBerg fair value
Raw LP$2.14Ungraded · TCGBerg fair value
Raw MP$1.31Ungraded · TCGBerg fair value
Raw HP$0.88Ungraded · market price
Raw Damaged$0.78Ungraded · TCGBerg fair value

hatched = market price, not a TCGBerg fair value

Population & rarity

715 graded copies of Koga's Ekans 1st Edition across 21 grades. The selected grade is highlighted.

PSA 10

142 · 20%

PSA 9

227 · 32%

PSA 8

44 · 6.2%

PSA 7

9 · 1.3%

PSA 6

6 · 0.8%

CGC Authentic

1 · 0.1%

CGC Gem Mint 10

61 · 8.5%

CGC Pristine 10

7 · 1.0%

CGC 9.5

17 · 2.4%

CGC 9

85 · 12%

CGC 8.5

54 · 7.6%

CGC 8

26 · 3.6%

CGC 7.5

16 · 2.2%

CGC 7

5 · 0.7%

CGC 6.5

3 · 0.4%

CGC 6

2 · 0.3%

CGC 4

2 · 0.3%

PSA 8.5

1 · 0.1%

PSA 5

5 · 0.7%

PSA 2

1 · 0.1%

PSA 1

1 · 0.1%

PSA 9 makes up 32% of graded copies: 227 of 715. It’s the most common grade for this card.

Relative valuation vs. index

How PSA 9 has moved relative to Gym Challenge · 1st Edition · Composite since May 17, 2026. Both indexed to 100 at the index’s inception. Card outperformed by 6.0 pp.

About Gym ChallengeParent set

This printing in the context of its parent set: total set cap and this printing's share of it.

Browse all sets →

Set total cap

$88.69M

across all printings

This printing's share

0.0%

of total set cap

Implied printing cap

$31.8K

share × set cap

Browse all sets →

Koga's Ekans - 1st Edition Normal at PSA 10 carries a TCGBerg fair value of $159 as of 2026-09-28. We track a TCGBerg fair value across 7 grades from Gym Challenge, from PSA 6 up to PSA 10. A graded population of 142 copies sits behind the PSA 10 grade. The PSA 10 valuation rests on limited sales evidence. Over the past 30 days, the PSA 8 TCGBerg fair value has fallen 10.1%.

Show more analysisAnalysis, commentary & FAQ

CGC 7 commentary

The TCGBerg fair value of a CGC 7 Koga's Ekans - 1st Edition Normal is $22 as of 2026-09-28. 5 copies have been graded at this level. This valuation rests on sparse sales evidence.

CGC 7 - frequently asked

What is the TCGBerg fair value of a CGC 7 Koga's Ekans - 1st Edition Normal?

$22 as of 2026-09-28, our model-derived fair value for a CGC 7 Koga's Ekans - 1st Edition Normal based on recent graded sales.

How rare is a CGC 7 Koga's Ekans - 1st Edition Normal?

5 copies have been graded at CGC 7, the graded population behind this atom.

Frequently asked

What is the TCGBerg fair value of a CGC 7 Koga's Ekans - 1st Edition Normal?: $22 as of 2026-09-28, our model-derived fair value for a CGC 7 Koga's Ekans - 1st Edition Normal based on recent graded sales.
How rare is a CGC 7 Koga's Ekans - 1st Edition Normal?: 5 copies have been graded at CGC 7, the graded population behind this atom.

CGC 6 commentary

The TCGBerg fair value of a CGC 6 Koga's Ekans - 1st Edition Normal is $17 as of 2026-09-28. 2 copies have been graded at this level. This valuation rests on sparse sales evidence.

CGC 6 - frequently asked

What is the TCGBerg fair value of a CGC 6 Koga's Ekans - 1st Edition Normal?

$17 as of 2026-09-28, our model-derived fair value for a CGC 6 Koga's Ekans - 1st Edition Normal based on recent graded sales.

How rare is a CGC 6 Koga's Ekans - 1st Edition Normal?

2 copies have been graded at CGC 6, the graded population behind this atom.

Frequently asked

What is the TCGBerg fair value of a CGC 6 Koga's Ekans - 1st Edition Normal?: $17 as of 2026-09-28, our model-derived fair value for a CGC 6 Koga's Ekans - 1st Edition Normal based on recent graded sales.
How rare is a CGC 6 Koga's Ekans - 1st Edition Normal?: 2 copies have been graded at CGC 6, the graded population behind this atom.

PSA 10 commentary

The TCGBerg fair value of a PSA 10 Koga's Ekans - 1st Edition Normal is $159 as of 2026-09-28. 142 copies have been graded at this level. This valuation rests on limited sales evidence. Over the past 30 days the TCGBerg fair value has fallen 3.8%. The most recent recorded sale was $136 on 2026-08-31.

PSA 10 - frequently asked

What is the TCGBerg fair value of a PSA 10 Koga's Ekans - 1st Edition Normal?

$159 as of 2026-09-28, our model-derived fair value for a PSA 10 Koga's Ekans - 1st Edition Normal based on recent graded sales.

How rare is a PSA 10 Koga's Ekans - 1st Edition Normal?

142 copies have been graded at PSA 10, the graded population behind this atom.

How has the PSA 10 Koga's Ekans - 1st Edition Normal price moved recently?

Its TCGBerg fair value has fallen 3.8% over the past 30 days.

Frequently asked

What is the TCGBerg fair value of a PSA 10 Koga's Ekans - 1st Edition Normal?: $159 as of 2026-09-28, our model-derived fair value for a PSA 10 Koga's Ekans - 1st Edition Normal based on recent graded sales.
How rare is a PSA 10 Koga's Ekans - 1st Edition Normal?: 142 copies have been graded at PSA 10, the graded population behind this atom.
How has the PSA 10 Koga's Ekans - 1st Edition Normal price moved recently?: Its TCGBerg fair value has fallen 3.8% over the past 30 days.

PSA 9 commentary

The TCGBerg fair value of a PSA 9 Koga's Ekans - 1st Edition Normal is $36 as of 2026-09-28. 227 copies have been graded at this level. This valuation rests on very strong sales evidence. Over the past 30 days the TCGBerg fair value has fallen 8.4%. The most recent recorded sale was $33 on 2026-09-12.

PSA 9 - frequently asked

What is the TCGBerg fair value of a PSA 9 Koga's Ekans - 1st Edition Normal?

$36 as of 2026-09-28, our model-derived fair value for a PSA 9 Koga's Ekans - 1st Edition Normal based on recent graded sales.

How rare is a PSA 9 Koga's Ekans - 1st Edition Normal?

227 copies have been graded at PSA 9, the graded population behind this atom.

How has the PSA 9 Koga's Ekans - 1st Edition Normal price moved recently?

Its TCGBerg fair value has fallen 8.4% over the past 30 days.

Frequently asked

What is the TCGBerg fair value of a PSA 9 Koga's Ekans - 1st Edition Normal?: $36 as of 2026-09-28, our model-derived fair value for a PSA 9 Koga's Ekans - 1st Edition Normal based on recent graded sales.
How rare is a PSA 9 Koga's Ekans - 1st Edition Normal?: 227 copies have been graded at PSA 9, the graded population behind this atom.
How has the PSA 9 Koga's Ekans - 1st Edition Normal price moved recently?: Its TCGBerg fair value has fallen 8.4% over the past 30 days.

PSA 8 commentary

The TCGBerg fair value of a PSA 8 Koga's Ekans - 1st Edition Normal is $21 as of 2026-09-28. 44 copies have been graded at this level. This valuation rests on strong sales evidence. Over the past 30 days the TCGBerg fair value has fallen 10.1%. The most recent recorded sale was $18 on 2026-09-22.

PSA 8 - frequently asked

What is the TCGBerg fair value of a PSA 8 Koga's Ekans - 1st Edition Normal?

$21 as of 2026-09-28, our model-derived fair value for a PSA 8 Koga's Ekans - 1st Edition Normal based on recent graded sales.

How rare is a PSA 8 Koga's Ekans - 1st Edition Normal?

44 copies have been graded at PSA 8, the graded population behind this atom.

How has the PSA 8 Koga's Ekans - 1st Edition Normal price moved recently?

Its TCGBerg fair value has fallen 10.1% over the past 30 days.

Frequently asked

What is the TCGBerg fair value of a PSA 8 Koga's Ekans - 1st Edition Normal?: $21 as of 2026-09-28, our model-derived fair value for a PSA 8 Koga's Ekans - 1st Edition Normal based on recent graded sales.
How rare is a PSA 8 Koga's Ekans - 1st Edition Normal?: 44 copies have been graded at PSA 8, the graded population behind this atom.
How has the PSA 8 Koga's Ekans - 1st Edition Normal price moved recently?: Its TCGBerg fair value has fallen 10.1% over the past 30 days.

PSA 7 commentary

The TCGBerg fair value of a PSA 7 Koga's Ekans - 1st Edition Normal is $20 as of 2026-09-28. 9 copies have been graded at this level. This valuation rests on sparse sales evidence. Over the past 30 days the TCGBerg fair value has fallen 7.7%.

PSA 7 - frequently asked

What is the TCGBerg fair value of a PSA 7 Koga's Ekans - 1st Edition Normal?

$20 as of 2026-09-28, our model-derived fair value for a PSA 7 Koga's Ekans - 1st Edition Normal based on recent graded sales.

How rare is a PSA 7 Koga's Ekans - 1st Edition Normal?

9 copies have been graded at PSA 7, the graded population behind this atom.

How has the PSA 7 Koga's Ekans - 1st Edition Normal price moved recently?

Its TCGBerg fair value has fallen 7.7% over the past 30 days.

Frequently asked

What is the TCGBerg fair value of a PSA 7 Koga's Ekans - 1st Edition Normal?: $20 as of 2026-09-28, our model-derived fair value for a PSA 7 Koga's Ekans - 1st Edition Normal based on recent graded sales.
How rare is a PSA 7 Koga's Ekans - 1st Edition Normal?: 9 copies have been graded at PSA 7, the graded population behind this atom.
How has the PSA 7 Koga's Ekans - 1st Edition Normal price moved recently?: Its TCGBerg fair value has fallen 7.7% over the past 30 days.

PSA 6 commentary

The TCGBerg fair value of a PSA 6 Koga's Ekans - 1st Edition Normal is $15 as of 2026-09-28. 6 copies have been graded at this level. This valuation rests on sparse sales evidence. Over the past 30 days the TCGBerg fair value has fallen 8.8%.

PSA 6 - frequently asked

What is the TCGBerg fair value of a PSA 6 Koga's Ekans - 1st Edition Normal?

$15 as of 2026-09-28, our model-derived fair value for a PSA 6 Koga's Ekans - 1st Edition Normal based on recent graded sales.

How rare is a PSA 6 Koga's Ekans - 1st Edition Normal?

6 copies have been graded at PSA 6, the graded population behind this atom.

How has the PSA 6 Koga's Ekans - 1st Edition Normal price moved recently?

Its TCGBerg fair value has fallen 8.8% over the past 30 days.

Frequently asked

What is the TCGBerg fair value of a PSA 6 Koga's Ekans - 1st Edition Normal?: $15 as of 2026-09-28, our model-derived fair value for a PSA 6 Koga's Ekans - 1st Edition Normal based on recent graded sales.
How rare is a PSA 6 Koga's Ekans - 1st Edition Normal?: 6 copies have been graded at PSA 6, the graded population behind this atom.
How has the PSA 6 Koga's Ekans - 1st Edition Normal price moved recently?: Its TCGBerg fair value has fallen 8.8% over the past 30 days.

Every printing of Koga's Ekans and the indices that include this card in their constituent basket.

Printings of Koga's Ekans

1st EditionviewingKoga's Ekans - 1st Edition Normal
UnlimitedKoga's Ekans - Unlimited$139

Indices containing this card

Parent set

Gym Challenge

Set total cap

$86.37M

Date

Grade

Price

Source

vs TCGBerg FV

Sep 23, 2026

Raw

tcgplayer

27.0%

Sep 22, 2026

PSA8

$18

ebay

12.6%

Sep 12, 2026

PSA9

$33

ebay

7.0%

Sep 11, 2026

PSA9

$36

ebay

0.1%

Sep 9, 2026

Raw

tcgplayer

41.8%

Sep 8, 2026

Raw

tcgplayer

16.7%

Sep 7, 2026

PSA9

$35

ebay

1.4%

Sep 7, 2026

Raw

tcgplayer

1.8%

Aug 31, 2026

PSA10

$136

ebay

19.6%

Aug 27, 2026

PSA8

$26

ebay

14.6%

CGC7

$22

0.1%

0.7%

Sparse

CGC6

$17

1.6%

0.4%

Sparse

PSA10

$159

142

$22.6K

0.3%

2.8%

3.8%

Limited

$1364w ago

PSA9

$36

227

$8.1K

0.1%

0.6%

8.4%

Very strong

$332w ago

PSA8

$21

$907

0.1%

17.7%

10.1%

Strong

$186d ago

PSA7

$20

$183

0.2%

0.5%

7.7%

Sparse

PSA6

$15

$90

1.1%

1.2%

8.8%

Sparse

Raw

3.8%

7.3%

Very strong

$55d ago

Koga's Ekans #77, 1st Edition, Gym Challenge

Active listings on eBayLive asking prices from eBay sellers. The delta shows how each ask compares to TCGBerg's quoted fair value for that grade. Verified deals are marked from the published analytics feed.

Behind the scenesHow the published fair value for this grade was produced: the estimates that fed it, their share of the starting mix, and every recorded change afterwards. It describes one saved calculation, not a live recomputation.

Recent sales10 tracked

All grades matrix

Price spectrum

Population & rarityHow Koga's Ekans's graded copies are spread across grades. Each bar is the number of copies graded at that grade; the percentage is that grade's share of the total graded population. Fewer copies at a grade = scarcer = a scarcity premium.

Relative valuation vs. indexBoth series are indexed to 100 at May 17, 2026, the index’s inception date, not the start of the selected range. A divergence means the card has outperformed or underperformed the index since then, by exactly the percentage-point gap.

About Gym ChallengeParent set

Analysis

CGC 7 commentary

CGC 7 - frequently asked

CGC 6 commentary

CGC 6 - frequently asked

PSA 10 commentary

PSA 10 - frequently asked

PSA 9 commentary

PSA 9 - frequently asked

PSA 8 commentary

PSA 8 - frequently asked

PSA 7 commentary

PSA 7 - frequently asked

PSA 6 commentary

PSA 6 - frequently asked

Related

Printings of Koga's Ekans

Indices containing this card

Parent set

Active listings on eBayLive asking prices from eBay sellers. The delta shows how each ask compares to TCGBerg's quoted fair value for that grade. Verified deals are marked from the published analytics feed.

Behind the scenesHow the published fair value for this grade was produced: the estimates that fed it, their share of the starting mix, and every recorded change afterwards. It describes one saved calculation, not a live recomputation.

Recent sales10 tracked

All grades matrix

Price spectrum

Population & rarityHow Koga's Ekans's graded copies are spread across grades. Each bar is the number of copies graded at that grade; the percentage is that grade's share of the total graded population. Fewer copies at a grade = scarcer = a scarcity premium.

Relative valuation vs. indexBoth series are indexed to 100 at May 17, 2026, the index’s inception date, not the start of the selected range. A divergence means the card has outperformed or underperformed the index since then, by exactly the percentage-point gap.

About Gym ChallengeParent set

Analysis

CGC 7 commentary

CGC 7 - frequently asked

CGC 6 commentary

CGC 6 - frequently asked

PSA 10 commentary

PSA 10 - frequently asked

PSA 9 commentary

PSA 9 - frequently asked

PSA 8 commentary

PSA 8 - frequently asked

PSA 7 commentary

PSA 7 - frequently asked

PSA 6 commentary

PSA 6 - frequently asked

Related

Printings of Koga's Ekans

Indices containing this card

Parent set

Active listings on eBay

Behind the scenes

Population & rarity

Relative valuation vs. index

Active listings on eBay

Behind the scenes

Population & rarity

Relative valuation vs. index