Charizard 1st Edition ShadowlessBASPSA 10$400,92211.1%

Aerodactyl ex HoloESSPSA 10$4,0650.0%

Dark Charizard 1st EditionTROPSA 9$2,5132.2%

Mega Charizard X ex HoloPHFPSA 10$2,1050.0%

Suicune 1st EditionNRVPSA 9$1,90521.4%

Charizard UnlimitedBASPSA 8$1,2840.8%

Blaine's Arcanine 1st EditionGYCPSA 9$1,1556.4%

Espeon HoloAQPPSA 8$1,1050.1%

Houndoom 1st EditionNRVPSA 8$1,04222.1%

Misty's Gyarados 1st EditionGYCPSA 9$8851.9%

Slowking HoloNEOPSA 9$8774.5%

Crobat HoloSKRPSA 9$8464.2%

Snorlax HoloJUNPSA 9$7922.0%

Charmander HoloMEWPSA 10$6650.2%

Dark Charizard HoloTROPSA 8$5263.5%

Charmeleon HoloMEWPSA 10$5120.5%

Blaine's Moltres 1st EditionGYHPSA 8$5013.4%

Giovanni's Gyarados HoloGYCPSA 9$4200.8%

Sabrina's Alakazam 1st EditionGYCPSA 8$4093.7%

Dark Machamp 1st EditionTROPSA 9$3625.3%

Mew ex HoloMEWPSA 10$3292.6%

Meganium HoloNEOPSA 9$3280.3%

Dragonite HoloFOSPSA 8$3083.3%

Machamp 1st Edition ShadowlessBASPSA 9$3046.8%

Gym Heroes · 1st Edition

Brock's Rhydon #2, 1st Edition, Gym Heroes

Gym Heroes 1st EditionGYH2F:EN

TKRGYH2F:EN-P9

TCGBerg fair value· PSA 9

$341

Our estimate of a fair value of this card based on our proprietary pricing algorithm and recent verified sales.

Data quality excellent91/100

30D performance6.3%

30D↑ 6.3%

YTD↑ 89.9%

MCAP$297.0K

VOL3.1%

Last sale (Aug 3, 2026)Last sale

$281

PSA 9 · Aug 3, 2026

17.5% below TCGBerg fair value

5-sale avg

$349

last 5 sales

Population · PSA 9

872

graded copies

TCGBerg fair value · PSA 9

$341

30D6.3%YTD89.9%

Data quality excellent91/100

Market cap

$297.0K

fair value x population

Population

872

graded copies

Last sale

$281

-17.5% vs fair

5-sale avg

$349

recent sales

Price history

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

Aug 17, 202552 weekly points · 79 salesAug 9, 2026

Gym Heroes · 1st Edition

Brock's Rhydon #2, 1st Edition, Gym Heroes

Gym Heroes 1st EditionGYH2F:EN

TKRGYH2F:EN-P9

TCGBerg fair value· PSA 9

$341

Our estimate of a fair value of this card based on our proprietary pricing algorithm and recent verified sales.

Data quality excellent91/100

30D performance6.3%

30D↑ 6.3%

YTD↑ 89.9%

MCAP$297.0K

VOL3.1%

Last sale (Aug 3, 2026)Last sale

$281

PSA 9 · Aug 3, 2026

17.5% below TCGBerg fair value

5-sale avg

$349

last 5 sales

Population · PSA 9

872

graded copies

TCGBerg fair value · PSA 9

$341

30D6.3%YTD89.9%

Data quality excellent91/100

Market cap

$297.0K

fair value x population

Population

872

graded copies

Last sale

$281

-17.5% vs fair

5-sale avg

$349

recent sales

Price history

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

Aug 17, 202552 weekly points · 79 salesAug 9, 2026

Active listings on eBay

PSA 9 · eBay

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

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
Aug 3, 2026	PSA9	$281	ebay	17.5%
Jul 24, 2026	PSA9	$299	fanatics_collect	14.0%
Jul 17, 2026	PSA9	$400	ebay	16.8%
Jul 16, 2026	PSA9	$345	ebay	0.8%
Jul 13, 2026	PSA9	$420	ebay	22.7%
Jul 6, 2026	PSA9	$244	goldin	23.8%
Jul 1, 2026	PSA9	$299	fanatics_collect	9.7%
Jul 1, 2026	PSA9	$628	ebay	89.8%
Jun 23, 2026	PSA9	$300	ebay	8.9%
Jun 21, 2026	PSA9	$280	ebay	20.2%

$281
Aug 3, 2026 · via ebay
PSA 9versus fair value, down 17.5%
$299
Jul 24, 2026 · via fanatics_collect
PSA 9versus fair value, down 14.0%
$400
Jul 17, 2026 · via ebay
PSA 9versus fair value, up 16.8%
$345
Jul 16, 2026 · via ebay
PSA 9versus fair value, up 0.8%
$420
Jul 13, 2026 · via ebay
PSA 9versus fair value, up 22.7%
$244
Jul 6, 2026 · via goldin
PSA 9versus fair value, down 23.8%
$299
Jul 1, 2026 · via fanatics_collect
PSA 9versus fair value, down 9.7%
$628
Jul 1, 2026 · via ebay
PSA 9versus fair value, up 89.8%
$300
Jun 23, 2026 · via ebay
PSA 9versus fair value, down 8.9%
$280
Jun 21, 2026 · via ebay
PSA 9versus fair value, down 20.2%

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.

PSA10$2,285
1d 0.5%7d 0.7%30d 5.3%
Pop
138
Mcap
$315.3K
Conf
62
Last
$1,740
PSA9$341
1d 0.1%7d 2.4%30d 6.3%
Pop
872
Mcap
$297.0K
Conf
91
Last
$281
PSA8$182
1d 0.1%7d 3.2%30d 8.0%
Pop
539
Mcap
$98.4K
Conf
93
Last
$128


PSA10	$2,285	138	$315.3K	0.5%	0.7%	5.3%	21.6%	-	62	$1,7403w ago
PSA9	$341	872	$297.0K	0.1%	2.4%	6.3%	10.8%	-	91	$2811w ago
PSA8	$182	539	$98.4K	0.1%	3.2%	8.0%	7.8%	-	93	$1282w ago
PSA7	$110	203	$22.3K	2.0%	6.3%	10.3%	15.5%	-	59	$802mo ago
PSA6	$92	108	$9.9K	0.8%	0.5%	4.6%	9.3%	-	43	$1003mo ago
Raw	$49	-	-	-	-	-	-	-	-	-

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 $226 to $655; it shades green below fair value to red above, saturating at ±25%.

TCGBerg fair value

$341

−25%

$255

$341

+25%

$426

+92%

$655

$226$341$655

LowFairHigh

Last sale
$281
17.5% below fairAug 3, 2026
Lowest ask
$300
11.9% below fairlowest active ask
Median ask
$370
8.7% above fairmedian active ask
Highest ask
$625
83.5% above fairhighest active ask

Last sale was 17.5% below TCGBerg fair value, the best listing right now sits 11.9% below 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 $49 up to gem-mint at $2.3K. Log scale. Tap a row to switch the whole page.

Raw Damaged$49Ungraded · TCGBerg fair value

Population & rarity

1,860 graded copies of Brock's Rhydon 1st Edition across 5 grades. The selected grade is highlighted.

PSA 10

138 · 7.4%

PSA 9

872 · 47%

PSA 8

539 · 29%

PSA 7

203 · 11%

PSA 6

108 · 5.8%

PSA 9 makes up 47% of graded copies: 872 of 1,860. It’s the most common grade for this card.

Relative valuation vs. index

How PSA 9 has moved relative to Gym Heroes · 1st Edition · Composite since May 17, 2026. Both indexed to 100 at the index’s inception. Card underperformed by 18.8 pp.

About Gym HeroesParent 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

$40.78M

across all printings

This printing's share

1.8%

of total set cap

Implied printing cap

$742.8K

share × set cap

Browse all sets →

Brock's Rhydon - 1st Edition Holo at PSA 10 carries a TCGBerg fair value of $2,285 as of 2026-08-09. We track a TCGBerg fair value across 5 grades from Gym Heroes, from PSA 6 up to PSA 10. A graded population of 138 copies sits behind the PSA 10 grade. The PSA 10 valuation carries high confidence (a confidence score of 62). Over the past 30 days, the PSA 7 TCGBerg fair value has risen 10.3%.

Show more analysisAnalysis, commentary & FAQ

PSA 10 commentary

The TCGBerg fair value of a PSA 10 Brock's Rhydon - 1st Edition Holo is $2,285 as of 2026-08-09. 138 copies have been graded at this level. This valuation carries high confidence (a confidence score of 62). Over the past 30 days the TCGBerg fair value has fallen 5.3%. The most recent recorded sale was $1,740 on 2026-07-20.

PSA 10 - frequently asked

What is the TCGBerg fair value of a PSA 10 Brock's Rhydon - 1st Edition Holo?

$2,285 as of 2026-08-09, our model-derived fair value for a PSA 10 Brock's Rhydon - 1st Edition Holo based on recent graded sales.

How rare is a PSA 10 Brock's Rhydon - 1st Edition Holo?

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

How has the PSA 10 Brock's Rhydon - 1st Edition Holo price moved recently?

Its TCGBerg fair value has fallen 5.3% over the past 30 days.

Frequently asked

What is the TCGBerg fair value of a PSA 10 Brock's Rhydon - 1st Edition Holo?: $2,285 as of 2026-08-09, our model-derived fair value for a PSA 10 Brock's Rhydon - 1st Edition Holo based on recent graded sales.
How rare is a PSA 10 Brock's Rhydon - 1st Edition Holo?: 138 copies have been graded at PSA 10, the graded population behind this atom.
How has the PSA 10 Brock's Rhydon - 1st Edition Holo price moved recently?: Its TCGBerg fair value has fallen 5.3% over the past 30 days.

PSA 9 commentary

The TCGBerg fair value of a PSA 9 Brock's Rhydon - 1st Edition Holo is $341 as of 2026-08-09. 872 copies have been graded at this level. This valuation carries very high confidence (a confidence score of 91). Over the past 30 days the TCGBerg fair value has risen 6.3%. The most recent recorded sale was $281 on 2026-08-03.

PSA 9 - frequently asked

What is the TCGBerg fair value of a PSA 9 Brock's Rhydon - 1st Edition Holo?

$341 as of 2026-08-09, our model-derived fair value for a PSA 9 Brock's Rhydon - 1st Edition Holo based on recent graded sales.

How rare is a PSA 9 Brock's Rhydon - 1st Edition Holo?

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

How has the PSA 9 Brock's Rhydon - 1st Edition Holo price moved recently?

Its TCGBerg fair value has risen 6.3% over the past 30 days.

Frequently asked

What is the TCGBerg fair value of a PSA 9 Brock's Rhydon - 1st Edition Holo?: $341 as of 2026-08-09, our model-derived fair value for a PSA 9 Brock's Rhydon - 1st Edition Holo based on recent graded sales.
How rare is a PSA 9 Brock's Rhydon - 1st Edition Holo?: 872 copies have been graded at PSA 9, the graded population behind this atom.
How has the PSA 9 Brock's Rhydon - 1st Edition Holo price moved recently?: Its TCGBerg fair value has risen 6.3% over the past 30 days.

PSA 8 commentary

The TCGBerg fair value of a PSA 8 Brock's Rhydon - 1st Edition Holo is $182 as of 2026-08-09. 539 copies have been graded at this level. This valuation carries very high confidence (a confidence score of 93). Over the past 30 days the TCGBerg fair value has fallen 8.0%. The most recent recorded sale was $128 on 2026-08-02.

PSA 8 - frequently asked

What is the TCGBerg fair value of a PSA 8 Brock's Rhydon - 1st Edition Holo?

$182 as of 2026-08-09, our model-derived fair value for a PSA 8 Brock's Rhydon - 1st Edition Holo based on recent graded sales.

How rare is a PSA 8 Brock's Rhydon - 1st Edition Holo?

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

How has the PSA 8 Brock's Rhydon - 1st Edition Holo price moved recently?

Its TCGBerg fair value has fallen 8.0% over the past 30 days.

Frequently asked

What is the TCGBerg fair value of a PSA 8 Brock's Rhydon - 1st Edition Holo?: $182 as of 2026-08-09, our model-derived fair value for a PSA 8 Brock's Rhydon - 1st Edition Holo based on recent graded sales.
How rare is a PSA 8 Brock's Rhydon - 1st Edition Holo?: 539 copies have been graded at PSA 8, the graded population behind this atom.
How has the PSA 8 Brock's Rhydon - 1st Edition Holo price moved recently?: Its TCGBerg fair value has fallen 8.0% over the past 30 days.

PSA 7 commentary

The TCGBerg fair value of a PSA 7 Brock's Rhydon - 1st Edition Holo is $110 as of 2026-08-09. 203 copies have been graded at this level. This valuation carries medium confidence (a confidence score of 59). Over the past 30 days the TCGBerg fair value has risen 10.3%. The most recent recorded sale was $80 on 2026-06-22.

PSA 7 - frequently asked

What is the TCGBerg fair value of a PSA 7 Brock's Rhydon - 1st Edition Holo?

$110 as of 2026-08-09, our model-derived fair value for a PSA 7 Brock's Rhydon - 1st Edition Holo based on recent graded sales.

How rare is a PSA 7 Brock's Rhydon - 1st Edition Holo?

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

How has the PSA 7 Brock's Rhydon - 1st Edition Holo price moved recently?

Its TCGBerg fair value has risen 10.3% over the past 30 days.

Frequently asked

What is the TCGBerg fair value of a PSA 7 Brock's Rhydon - 1st Edition Holo?: $110 as of 2026-08-09, our model-derived fair value for a PSA 7 Brock's Rhydon - 1st Edition Holo based on recent graded sales.
How rare is a PSA 7 Brock's Rhydon - 1st Edition Holo?: 203 copies have been graded at PSA 7, the graded population behind this atom.
How has the PSA 7 Brock's Rhydon - 1st Edition Holo price moved recently?: Its TCGBerg fair value has risen 10.3% over the past 30 days.

PSA 6 commentary

The TCGBerg fair value of a PSA 6 Brock's Rhydon - 1st Edition Holo is $92 as of 2026-08-09. 108 copies have been graded at this level. This valuation carries medium confidence (a confidence score of 43). Over the past 30 days the TCGBerg fair value has risen 4.6%. The most recent recorded sale was $100 on 2026-05-13.

PSA 6 - frequently asked

What is the TCGBerg fair value of a PSA 6 Brock's Rhydon - 1st Edition Holo?

$92 as of 2026-08-09, our model-derived fair value for a PSA 6 Brock's Rhydon - 1st Edition Holo based on recent graded sales.

How rare is a PSA 6 Brock's Rhydon - 1st Edition Holo?

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

How has the PSA 6 Brock's Rhydon - 1st Edition Holo price moved recently?

Its TCGBerg fair value has risen 4.6% over the past 30 days.

Frequently asked

What is the TCGBerg fair value of a PSA 6 Brock's Rhydon - 1st Edition Holo?: $92 as of 2026-08-09, our model-derived fair value for a PSA 6 Brock's Rhydon - 1st Edition Holo based on recent graded sales.
How rare is a PSA 6 Brock's Rhydon - 1st Edition Holo?: 108 copies have been graded at PSA 6, the graded population behind this atom.
How has the PSA 6 Brock's Rhydon - 1st Edition Holo price moved recently?: Its TCGBerg fair value has risen 4.6% over the past 30 days.

Other printings of Brock's Rhydon and indices that include this card in their constituent basket.

Other printings of Brock's Rhydon

Brock's Rhydon - Unlimited$1,357

Indices containing this card

Parent set

Gym Heroes

Set total cap

$38.54M

About Gym HeroesParent 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

$40.78M

across all printings

This printing's share

1.8%

of total set cap

Implied printing cap

$742.8K

share × set cap

Browse all sets →

Show more analysisAnalysis, commentary & FAQ

PSA 10 commentary

PSA 10 - frequently asked

What is the TCGBerg fair value of a PSA 10 Brock's Rhydon - 1st Edition Holo?

$2,285 as of 2026-08-09, our model-derived fair value for a PSA 10 Brock's Rhydon - 1st Edition Holo based on recent graded sales.

How rare is a PSA 10 Brock's Rhydon - 1st Edition Holo?

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

How has the PSA 10 Brock's Rhydon - 1st Edition Holo price moved recently?

Its TCGBerg fair value has fallen 5.3% over the past 30 days.

Frequently asked

What is the TCGBerg fair value of a PSA 10 Brock's Rhydon - 1st Edition Holo?: $2,285 as of 2026-08-09, our model-derived fair value for a PSA 10 Brock's Rhydon - 1st Edition Holo based on recent graded sales.
How rare is a PSA 10 Brock's Rhydon - 1st Edition Holo?: 138 copies have been graded at PSA 10, the graded population behind this atom.
How has the PSA 10 Brock's Rhydon - 1st Edition Holo price moved recently?: Its TCGBerg fair value has fallen 5.3% over the past 30 days.

PSA 9 commentary

PSA 9 - frequently asked

What is the TCGBerg fair value of a PSA 9 Brock's Rhydon - 1st Edition Holo?

$341 as of 2026-08-09, our model-derived fair value for a PSA 9 Brock's Rhydon - 1st Edition Holo based on recent graded sales.

How rare is a PSA 9 Brock's Rhydon - 1st Edition Holo?

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

How has the PSA 9 Brock's Rhydon - 1st Edition Holo price moved recently?

Its TCGBerg fair value has risen 6.3% over the past 30 days.

Frequently asked

What is the TCGBerg fair value of a PSA 9 Brock's Rhydon - 1st Edition Holo?: $341 as of 2026-08-09, our model-derived fair value for a PSA 9 Brock's Rhydon - 1st Edition Holo based on recent graded sales.
How rare is a PSA 9 Brock's Rhydon - 1st Edition Holo?: 872 copies have been graded at PSA 9, the graded population behind this atom.
How has the PSA 9 Brock's Rhydon - 1st Edition Holo price moved recently?: Its TCGBerg fair value has risen 6.3% over the past 30 days.

PSA 8 commentary

PSA 8 - frequently asked

What is the TCGBerg fair value of a PSA 8 Brock's Rhydon - 1st Edition Holo?

$182 as of 2026-08-09, our model-derived fair value for a PSA 8 Brock's Rhydon - 1st Edition Holo based on recent graded sales.

How rare is a PSA 8 Brock's Rhydon - 1st Edition Holo?

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

How has the PSA 8 Brock's Rhydon - 1st Edition Holo price moved recently?

Its TCGBerg fair value has fallen 8.0% over the past 30 days.

Frequently asked

What is the TCGBerg fair value of a PSA 8 Brock's Rhydon - 1st Edition Holo?: $182 as of 2026-08-09, our model-derived fair value for a PSA 8 Brock's Rhydon - 1st Edition Holo based on recent graded sales.
How rare is a PSA 8 Brock's Rhydon - 1st Edition Holo?: 539 copies have been graded at PSA 8, the graded population behind this atom.
How has the PSA 8 Brock's Rhydon - 1st Edition Holo price moved recently?: Its TCGBerg fair value has fallen 8.0% over the past 30 days.

PSA 7 commentary

PSA 7 - frequently asked

What is the TCGBerg fair value of a PSA 7 Brock's Rhydon - 1st Edition Holo?

$110 as of 2026-08-09, our model-derived fair value for a PSA 7 Brock's Rhydon - 1st Edition Holo based on recent graded sales.

How rare is a PSA 7 Brock's Rhydon - 1st Edition Holo?

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

How has the PSA 7 Brock's Rhydon - 1st Edition Holo price moved recently?

Its TCGBerg fair value has risen 10.3% over the past 30 days.

Frequently asked

What is the TCGBerg fair value of a PSA 7 Brock's Rhydon - 1st Edition Holo?: $110 as of 2026-08-09, our model-derived fair value for a PSA 7 Brock's Rhydon - 1st Edition Holo based on recent graded sales.
How rare is a PSA 7 Brock's Rhydon - 1st Edition Holo?: 203 copies have been graded at PSA 7, the graded population behind this atom.
How has the PSA 7 Brock's Rhydon - 1st Edition Holo price moved recently?: Its TCGBerg fair value has risen 10.3% over the past 30 days.

PSA 6 commentary

PSA 6 - frequently asked

What is the TCGBerg fair value of a PSA 6 Brock's Rhydon - 1st Edition Holo?

$92 as of 2026-08-09, our model-derived fair value for a PSA 6 Brock's Rhydon - 1st Edition Holo based on recent graded sales.

How rare is a PSA 6 Brock's Rhydon - 1st Edition Holo?

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

How has the PSA 6 Brock's Rhydon - 1st Edition Holo price moved recently?

Its TCGBerg fair value has risen 4.6% over the past 30 days.

Frequently asked

What is the TCGBerg fair value of a PSA 6 Brock's Rhydon - 1st Edition Holo?: $92 as of 2026-08-09, our model-derived fair value for a PSA 6 Brock's Rhydon - 1st Edition Holo based on recent graded sales.
How rare is a PSA 6 Brock's Rhydon - 1st Edition Holo?: 108 copies have been graded at PSA 6, the graded population behind this atom.
How has the PSA 6 Brock's Rhydon - 1st Edition Holo price moved recently?: Its TCGBerg fair value has risen 4.6% over the past 30 days.

Other printings of Brock's Rhydon and indices that include this card in their constituent basket.

Other printings of Brock's Rhydon

Brock's Rhydon - Unlimited$1,357

Indices containing this card

Parent set

Gym Heroes

Set total cap

$38.54M

Brock's Rhydon #2, 1st Edition, Gym Heroes

Brock's Rhydon #2, 1st Edition, Gym Heroes

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.

Recent sales10 tracked

All grades matrix

Price spectrum

Population & rarityHow Brock's Rhydon'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 HeroesParent set

Analysis

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

Other printings of Brock's Rhydon

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.

Recent sales10 tracked

All grades matrix

Price spectrum

Population & rarityHow Brock's Rhydon'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 HeroesParent set

Analysis

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

Other printings of Brock's Rhydon

Indices containing this card

Parent set

Active listings on eBay

Population & rarity

Relative valuation vs. index

Active listings on eBay

Population & rarity

Relative valuation vs. index