Gym Challenge · 1st Edition

Grass Energy #129, 1st Edition, Gym Challenge

Card number: #129/132
Rarity: Common
Finish: Non-Holo

Gym Challenge 1st EditionGYC129F:EN

TKRGYC129F:EN-P9

Grading toolPro

TCGBerg fair value· PSA 9

$36

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

Sales evidenceModerate

30D performance73.0%

30D: ↑ 73.0%
YTD: ↑ 190.1%
Market cap: $2.7K
Volatility: 23.2%

Last sale (Sep 13, 2026)Last sale

$50

PSA 9 · Sep 13, 2026

38.0% above TCGBerg fair value

5-sale avg

$30

last 5 sales

Population · PSA 9

graded copies

TCGBerg fair value · PSA 9

$36

30D73.0%YTD190.1%

Sales evidenceModerate

Market cap

$2.7K

fair value x population

Population

graded copies

Last sale

$50

+38.0% vs fair

5-sale avg

$30

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 5, 202552 weekly points · 4 salesSep 27, 2026

Active listings on eBay

PSA 9 · eBay

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

PSA9
$50
39% above fair
FV $36
2000 POKEMON GYM CHALLENGE #129 GRASS ENERGY PSA 9 MINT 1ST EDITION
2378 ratings100% positive
View on eBay
$5039% above fair
2000 POKEMON GYM CHALLENGE #129 GRASS ENERGY PSA 9 MINT 1ST EDITION
2378 ratings
View

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 21, 2026	Raw	$2	tcgplayer	21.4%
Sep 13, 2026	PSA9	$50	ebay	39.8%
Sep 5, 2026	Raw	$1	tcgplayer	9.1%
Sep 5, 2026	Raw	$1	tcgplayer	9.1%
Aug 25, 2026	Raw	$1	tcgplayer	54.0%
Aug 16, 2026	Raw	$1	tcgplayer	20.5%
Aug 3, 2026	PSA10	$178	ebay	55.4%
Aug 3, 2026	Raw	$1	tcgplayer	1.3%
Aug 2, 2026	Raw	$2	tcgplayer	3.3%
Jul 26, 2026	PSA7	$8	ebay	36.7%

$2
Sep 21, 2026 · via tcgplayer
Rawversus fair value, up 21.4%
$50
Sep 13, 2026 · via ebay
PSA9versus fair value, up 39.8%
$1
Sep 5, 2026 · via tcgplayer
Rawversus fair value, down 9.1%
$1
Sep 5, 2026 · via tcgplayer
Rawversus fair value, down 9.1%
$1
Aug 25, 2026 · via tcgplayer
Rawversus fair value, down 54.0%
$1
Aug 16, 2026 · via tcgplayer
Rawversus fair value, down 20.5%
$178
Aug 3, 2026 · via ebay
PSA10versus fair value, down 55.4%
$1
Aug 3, 2026 · via tcgplayer
Rawversus fair value, down 1.3%
$2
Aug 2, 2026 · via tcgplayer
Rawversus fair value, up 3.3%
$8
Jul 26, 2026 · via ebay
PSA7versus fair value, down 36.7%

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.

CGC8$16
1d 0.1%7d 20.7%30d -
Pop
6
Mcap
-
Evidence
Sparse
Last
-
CGC7$12
1d 0.2%7d 14.3%30d -
Pop
2
Mcap
-
Evidence
Sparse
Last
$8
PSA10$229
1d 0.1%7d 2.4%30d 45.8%
Pop
42
Mcap
$9.6K
Evidence
Sparse
Last
$178


CGC8	$16	6	-	0.1%	20.7%	-	-	-	Sparse	-
CGC7	$12	2	-	0.2%	14.3%	-	-	-	Sparse	$82mo ago
PSA10	$229	42	$9.6K	0.1%	2.4%	45.8%	39.8%	-	Sparse	$1782mo ago
PSA9	$36	74	$2.7K	0.0%	0.3%	73.0%	111.2%	-	Moderate	$502w ago
PSA8	$16	25	$402	0.0%	3.7%	17.6%	35.1%	-	Sparse	-
PSA7	$7	17	$122	0.0%	7.1%	46.8%	35.1%	-	Sparse	$82mo ago
PSA6	$3	3	$10	0.0%	10.7%	76.0%	68.8%	-	Sparse	-
Raw	$1	-	-	-	7.4%	5.8%	-	-	Very strong	$21w 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 $25 to $52; it shades green below fair value to red above, saturating at ±25%.

TCGBerg fair value

$36

−25%

$27

$36

+25%

$45

+44%

$52

$25$36$52

LowFairHigh

Last sale
$50
38.0% above fairSep 13, 2026
Lowest / median / highest ask
$50
39.1% above fairlowest active ask

Last sale was 38.0% above TCGBerg fair value, the best listing right now sits 39.1% 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 $0.43 up to gem-mint at $229. Log scale. Tap a row to switch the whole page.

Raw NM$1.31Ungraded · TCGBerg fair value
Raw LP$0.87Ungraded · TCGBerg fair value
Raw MP$0.59Ungraded · market price
Raw HP$0.49Ungraded · market price
Raw Damaged$0.43Ungraded · market price

hatched = market price, not a TCGBerg fair value

Population & rarity

268 graded copies of Grass Energy 1st Edition across 19 grades. The selected grade is highlighted.

PSA 10

42 · 16%

PSA 9

74 · 28%

PSA 8

25 · 9.3%

PSA 7

17 · 6.3%

PSA 6

3 · 1.1%

CGC Authentic

1 · 0.4%

CGC Gem Mint 10

10 · 3.7%

CGC Pristine 10

3 · 1.1%

CGC 9.5

1 · 0.4%

CGC 9

45 · 17%

CGC 8.5

29 · 11%

CGC 8

6 · 2.2%

CGC 7.5

5 · 1.9%

CGC 7

2 · 0.7%

CGC 6.5

1 · 0.4%

CGC 4.5

1 · 0.4%

PSA 8.5

1 · 0.4%

PSA 5

1 · 0.4%

PSA 3

1 · 0.4%

PSA 9 makes up 28% of graded copies: 74 of 268. 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 74.6 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

$12.8K

share × set cap

Browse all sets →

Grass Energy - 1st Edition Normal at PSA 10 carries a TCGBerg fair value of $229 as of 2026-09-27. We track a TCGBerg fair value across 7 grades from Gym Challenge, from PSA 6 up to PSA 10. A graded population of 42 copies sits behind the PSA 10 grade. The PSA 10 valuation rests on sparse sales evidence. Over the past 30 days, the PSA 6 TCGBerg fair value has fallen 76.0%.

Show more analysisAnalysis, commentary & FAQ

CGC 8 commentary

The TCGBerg fair value of a CGC 8 Grass Energy - 1st Edition Normal is $16 as of 2026-09-27. 6 copies have been graded at this level. This valuation rests on sparse sales evidence.

CGC 8 - frequently asked

What is the TCGBerg fair value of a CGC 8 Grass Energy - 1st Edition Normal?

$16 as of 2026-09-27, our model-derived fair value for a CGC 8 Grass Energy - 1st Edition Normal based on recent graded sales.

How rare is a CGC 8 Grass Energy - 1st Edition Normal?

6 copies have been graded at CGC 8, the graded population behind this atom.

Frequently asked

What is the TCGBerg fair value of a CGC 8 Grass Energy - 1st Edition Normal?: $16 as of 2026-09-27, our model-derived fair value for a CGC 8 Grass Energy - 1st Edition Normal based on recent graded sales.
How rare is a CGC 8 Grass Energy - 1st Edition Normal?: 6 copies have been graded at CGC 8, the graded population behind this atom.

CGC 7 commentary

The TCGBerg fair value of a CGC 7 Grass Energy - 1st Edition Normal is $12 as of 2026-09-27. 2 copies have been graded at this level. This valuation rests on sparse sales evidence. The most recent recorded sale was $8 on 2026-07-26.

CGC 7 - frequently asked

What is the TCGBerg fair value of a CGC 7 Grass Energy - 1st Edition Normal?

$12 as of 2026-09-27, our model-derived fair value for a CGC 7 Grass Energy - 1st Edition Normal based on recent graded sales.

How rare is a CGC 7 Grass Energy - 1st Edition Normal?

2 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 Grass Energy - 1st Edition Normal?: $12 as of 2026-09-27, our model-derived fair value for a CGC 7 Grass Energy - 1st Edition Normal based on recent graded sales.
How rare is a CGC 7 Grass Energy - 1st Edition Normal?: 2 copies have been graded at CGC 7, the graded population behind this atom.

PSA 10 commentary

The TCGBerg fair value of a PSA 10 Grass Energy - 1st Edition Normal is $229 as of 2026-09-27. 42 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 45.8%. The most recent recorded sale was $178 on 2026-08-03.

PSA 10 - frequently asked

What is the TCGBerg fair value of a PSA 10 Grass Energy - 1st Edition Normal?

$229 as of 2026-09-27, our model-derived fair value for a PSA 10 Grass Energy - 1st Edition Normal based on recent graded sales.

How rare is a PSA 10 Grass Energy - 1st Edition Normal?

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

How has the PSA 10 Grass Energy - 1st Edition Normal price moved recently?

Its TCGBerg fair value has fallen 45.8% over the past 30 days.

Frequently asked

What is the TCGBerg fair value of a PSA 10 Grass Energy - 1st Edition Normal?: $229 as of 2026-09-27, our model-derived fair value for a PSA 10 Grass Energy - 1st Edition Normal based on recent graded sales.
How rare is a PSA 10 Grass Energy - 1st Edition Normal?: 42 copies have been graded at PSA 10, the graded population behind this atom.
How has the PSA 10 Grass Energy - 1st Edition Normal price moved recently?: Its TCGBerg fair value has fallen 45.8% over the past 30 days.

PSA 9 commentary

The TCGBerg fair value of a PSA 9 Grass Energy - 1st Edition Normal is $36 as of 2026-09-27. 74 copies have been graded at this level. This valuation rests on moderate sales evidence. Over the past 30 days the TCGBerg fair value has risen 73.0%. The most recent recorded sale was $50 on 2026-09-13.

PSA 9 - frequently asked

What is the TCGBerg fair value of a PSA 9 Grass Energy - 1st Edition Normal?

$36 as of 2026-09-27, our model-derived fair value for a PSA 9 Grass Energy - 1st Edition Normal based on recent graded sales.

How rare is a PSA 9 Grass Energy - 1st Edition Normal?

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

How has the PSA 9 Grass Energy - 1st Edition Normal price moved recently?

Its TCGBerg fair value has risen 73.0% over the past 30 days.

Frequently asked

What is the TCGBerg fair value of a PSA 9 Grass Energy - 1st Edition Normal?: $36 as of 2026-09-27, our model-derived fair value for a PSA 9 Grass Energy - 1st Edition Normal based on recent graded sales.
How rare is a PSA 9 Grass Energy - 1st Edition Normal?: 74 copies have been graded at PSA 9, the graded population behind this atom.
How has the PSA 9 Grass Energy - 1st Edition Normal price moved recently?: Its TCGBerg fair value has risen 73.0% over the past 30 days.

PSA 8 commentary

The TCGBerg fair value of a PSA 8 Grass Energy - 1st Edition Normal is $16 as of 2026-09-27. 25 copies have been graded at this level. This valuation rests on sparse sales evidence. Over the past 30 days the TCGBerg fair value has risen 17.6%.

PSA 8 - frequently asked

What is the TCGBerg fair value of a PSA 8 Grass Energy - 1st Edition Normal?

$16 as of 2026-09-27, our model-derived fair value for a PSA 8 Grass Energy - 1st Edition Normal based on recent graded sales.

How rare is a PSA 8 Grass Energy - 1st Edition Normal?

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

How has the PSA 8 Grass Energy - 1st Edition Normal price moved recently?

Its TCGBerg fair value has risen 17.6% over the past 30 days.

Frequently asked

What is the TCGBerg fair value of a PSA 8 Grass Energy - 1st Edition Normal?: $16 as of 2026-09-27, our model-derived fair value for a PSA 8 Grass Energy - 1st Edition Normal based on recent graded sales.
How rare is a PSA 8 Grass Energy - 1st Edition Normal?: 25 copies have been graded at PSA 8, the graded population behind this atom.
How has the PSA 8 Grass Energy - 1st Edition Normal price moved recently?: Its TCGBerg fair value has risen 17.6% over the past 30 days.

PSA 7 commentary

The TCGBerg fair value of a PSA 7 Grass Energy - 1st Edition Normal is $7 as of 2026-09-27. 17 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 46.8%. The most recent recorded sale was $8 on 2026-07-26.

PSA 7 - frequently asked

What is the TCGBerg fair value of a PSA 7 Grass Energy - 1st Edition Normal?

$7 as of 2026-09-27, our model-derived fair value for a PSA 7 Grass Energy - 1st Edition Normal based on recent graded sales.

How rare is a PSA 7 Grass Energy - 1st Edition Normal?

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

How has the PSA 7 Grass Energy - 1st Edition Normal price moved recently?

Its TCGBerg fair value has fallen 46.8% over the past 30 days.

Frequently asked

What is the TCGBerg fair value of a PSA 7 Grass Energy - 1st Edition Normal?: $7 as of 2026-09-27, our model-derived fair value for a PSA 7 Grass Energy - 1st Edition Normal based on recent graded sales.
How rare is a PSA 7 Grass Energy - 1st Edition Normal?: 17 copies have been graded at PSA 7, the graded population behind this atom.
How has the PSA 7 Grass Energy - 1st Edition Normal price moved recently?: Its TCGBerg fair value has fallen 46.8% over the past 30 days.

PSA 6 commentary

The TCGBerg fair value of a PSA 6 Grass Energy - 1st Edition Normal is $3 as of 2026-09-27. 3 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 76.0%.

PSA 6 - frequently asked

What is the TCGBerg fair value of a PSA 6 Grass Energy - 1st Edition Normal?

$3 as of 2026-09-27, our model-derived fair value for a PSA 6 Grass Energy - 1st Edition Normal based on recent graded sales.

How rare is a PSA 6 Grass Energy - 1st Edition Normal?

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

How has the PSA 6 Grass Energy - 1st Edition Normal price moved recently?

Its TCGBerg fair value has fallen 76.0% over the past 30 days.

Frequently asked

What is the TCGBerg fair value of a PSA 6 Grass Energy - 1st Edition Normal?: $3 as of 2026-09-27, our model-derived fair value for a PSA 6 Grass Energy - 1st Edition Normal based on recent graded sales.
How rare is a PSA 6 Grass Energy - 1st Edition Normal?: 3 copies have been graded at PSA 6, the graded population behind this atom.
How has the PSA 6 Grass Energy - 1st Edition Normal price moved recently?: Its TCGBerg fair value has fallen 76.0% over the past 30 days.

Every printing of Grass Energy and the indices that include this card in their constituent basket.

Printings of Grass Energy

1st EditionviewingGrass Energy - 1st Edition Normal
UnlimitedGrass Energy - Unlimited$33

Indices containing this card

Parent set

Gym Challenge

Set total cap

$86.77M

Date

Grade

Price

Source

vs TCGBerg FV

Sep 21, 2026

Raw

tcgplayer

21.4%

Sep 13, 2026

PSA9

$50

ebay

39.8%

Sep 5, 2026

Raw

tcgplayer

9.1%

Sep 5, 2026

Raw

tcgplayer

9.1%

Aug 25, 2026

Raw

tcgplayer

54.0%

Aug 16, 2026

Raw

tcgplayer

20.5%

Aug 3, 2026

PSA10

$178

ebay

55.4%

Aug 3, 2026

Raw

tcgplayer

1.3%

Aug 2, 2026

Raw

tcgplayer

3.3%

Jul 26, 2026

PSA7

ebay

36.7%

CGC8

$16

0.1%

20.7%

Sparse

CGC7

$12

0.2%

14.3%

Sparse

$82mo ago

PSA10

$229

$9.6K

0.1%

2.4%

45.8%

Sparse

$1782mo ago

PSA9

$36

$2.7K

0.0%

0.3%

73.0%

Moderate

$502w ago

PSA8

$16

$402

0.0%

3.7%

17.6%

Sparse

PSA7

$122

0.0%

7.1%

46.8%

Sparse

$82mo ago

PSA6

$10

0.0%

10.7%

76.0%

Sparse

Raw

7.4%

5.8%

Very strong

$21w ago

Grass Energy #129, 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 Grass Energy'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 8 commentary

CGC 8 - frequently asked

CGC 7 commentary

CGC 7 - 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 Grass Energy

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 Grass Energy'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 8 commentary

CGC 8 - frequently asked

CGC 7 commentary

CGC 7 - 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 Grass Energy

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