Brock's Onix - 1st Edition Normal, Gym Heroes: Price, Fair Value and Population

tcgberg

Dragonair HoloMEW · PSA 10$2811.0%

Charizard ex HoloMEW · PSA 10$1,6101.3%

Alakazam HoloBS2 · PSA 9$1936.5%

Venusaur UnlimitedBAS · PSA 8$3024.0%

Gengar HoloFOS · PSA 8$3340.7%

Venusaur ex HoloMEW · PSA 10$1351.9%

Charizard ex HoloMEW · PSA 9$567.1%

Brock's Golem 1st EditionGYM · PSA 10$284115.0%

Charizard 1st Edition ShadowlessBAS · PSA 9$46,2710.4%

Magikarp NormalMEW · PSA 7$7500.0%

Gambler 1st EditionFOS · PSA 8$6264.8%

Pikachu 1st Edition Red CheeksBAS · PSA 10$24,5040.5%

Charmander Eb Games ExclusiveMEW · PSA 9$2790.0%

Pikachu Unlimited Yellow CheeksBAS · PSA 10$4242.5%

Blastoise ex HoloMEW · PSA 10$6233.9%

Vileplume HoloMEW · PSA 8$1441873.0%

Magneton HoloBS2 · PSA 8$6550.7%

Dark Charizard 1st EditionROK · PSA 10$18,0391.5%

Eevee Pokemon TogetherMEW · PSA 9$1300.8%

Hitmonchan 1st Edition ShadowlessBAS · PSA 7$64933.9%

Charizard ShadowlessBAS · PSA 9$10,5021.3%

Raichu PrereleaseBAS · PSA 6$550,0000.0%

Electrode UnlimitedBAS · PSA 9$529.9%

Venusaur ex HoloMEW · PSA 10$5041.2%

Clefable PrereleaseJUN · PSA 9$7,7750.0%

Electrode HoloJUN · PSA 10$84730.1%

Blastoise 1st Edition ShadowlessBAS · PSA 9$10,6520.1%

Venusaur 1st Edition ShadowlessBAS · PSA 9$7,1980.2%

Beedrill ShadowlessBAS · PSA 9$8515.5%

Charizard UnlimitedBAS · PSA 10$15,2950.0%

Dark Dragonite 1st EditionROK · PSA 9$5,2080.0%

Computer Search 1st Edition ShadowlessBAS · PSA 9$44926.7%

Zapdos ex HoloMEW · PSA 10$4581.0%

Sabrina's Gengar 1st EditionGYM · PSA 9$3,4202.5%

Basic Psychic Energy HoloMEW · PSA 10$10125.8%

Charmander HoloMEW · PSA 10$6650.0%

Snorlax 1st EditionJUN · PSA 9$2,7342.4%

Pikachu NormalMEW · PSA 10$13423.9%

Blastoise UnlimitedBAS · PSA 9$1,1040.1%

Nidoking HoloBS2 · PSA 6$3023.2%

Pikachu HoloMEW · PSA 10$6040.4%

Computer Search ShadowlessBAS · PSA 9$5422.8%

Dragonite 1st EditionFOS · PSA 9$2,4311.7%

Gengar 1st EditionFOS · PSA 10$27,6780.7%

Wigglytuff HoloBS2 · PSA 10$18,6460.0%

Charizard HoloBS2 · PSA 10$17,0770.0%

Vaporeon 1st EditionJUN · PSA 10$16,8950.9%

Dark Magneton 1st EditionROK · PSA 10$15,8890.1%

Sabrina's Gengar HoloGYM · PSA 10$14,9980.2%

Dark Dragonite No HoloROK · PSA 10$12,9850.0%

Brock's Onix - 1st Edition Normal, Gym Heroes: Price, Fair Value and Population | TCGBerg

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	$170	—	—	0.0%	0.0%	0.4%	36.8%	—	37	$2853mo ago
PSA9	$48	—	—	0.0%	0.0%	0.2%	3.8%	—	43	$793mo ago
PSA8	$25	—	—	0.0%	0.0%	0.0%	5.7%	—	39	$302mo ago
PSA7	$25	—	—	0.0%	27.0%	27.0%	29.9%	—	71	$262d ago
Raw	$13	—	—	0.0%	0.0%	1.3%	1.3%	—	—	—

Recent sales

Most recent transactions from public auction comps and dealer reporting. Showing 9 of 9; 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
Mar 14, 2026	PSA9	$79	ebay	65.3%
Feb 27, 2026	PSA9	$50	ebay	4.1%
Jan 16, 2026	PSA9	$45	ebay	6.3%
Nov 20, 2025	PSA9	$65	ebay	35.3%
Nov 3, 2025	PSA9	$35	ebay	27.1%
Sep 21, 2025	PSA9	$30	ebay	37.6%
Sep 8, 2025	PSA9	$25	ebay	48.0%
Aug 28, 2025	PSA9	$67	ebay	40.1%
Jul 2, 2025	PSA9	$35	ebay	27.1%

Mar 14, 2026PSA9
$7965.3%
via ebay
Feb 27, 2026PSA9
$504.1%
via ebay
Jan 16, 2026PSA9
$456.3%
via ebay
Nov 20, 2025PSA9
$6535.3%
via ebay
Nov 3, 2025PSA9
$3527.1%
via ebay
Sep 21, 2025PSA9
$3037.6%
via ebay
Sep 8, 2025PSA9
$2548.0%
via ebay
Aug 28, 2025PSA9
$6740.1%
via ebay
Jul 2, 2025PSA9
$3527.1%
via ebay

Analysis

Brock's Onix - 1st Edition Normal at PSA 10 carries a TCGBerg fair value of $170 as of 2026-06-16. We track a TCGBerg fair value across 4 grades from Gym Heroes, from PSA 8 up to PSA 10. The PSA 10 valuation carries low confidence (a confidence score of 37). Over the past 30 days, the PSA 7 TCGBerg fair value has risen 27.0%.

Show more analysis

PSA 10 commentary

The TCGBerg fair value of a PSA 10 Brock's Onix - 1st Edition Normal is $170 as of 2026-06-16. This valuation carries low confidence (a confidence score of 37). Over the past 30 days the TCGBerg fair value has fallen 0.4%. The most recent recorded sale was $285 on 2026-03-31.

PSA 10 — frequently asked

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

$170 as of 2026-06-16, our model-derived fair value for a PSA 10 Brock's Onix - 1st Edition Normal based on recent graded sales.

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

Its TCGBerg fair value has fallen 0.4% over the past 30 days.

PSA 9 commentary

The TCGBerg fair value of a PSA 9 Brock's Onix - 1st Edition Normal is $48 as of 2026-06-16. This valuation carries medium confidence (a confidence score of 43). Over the past 30 days the TCGBerg fair value has fallen 0.2%. The most recent recorded sale was $79 on 2026-03-14.

PSA 9 — frequently asked

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

$48 as of 2026-06-16, our model-derived fair value for a PSA 9 Brock's Onix - 1st Edition Normal based on recent graded sales.

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

Its TCGBerg fair value has fallen 0.2% over the past 30 days.

PSA 8 commentary

The TCGBerg fair value of a PSA 8 Brock's Onix - 1st Edition Normal is $25 as of 2026-06-16. This valuation carries low confidence (a confidence score of 39). Over the past 90 days the TCGBerg fair value has risen 5.7%. The most recent recorded sale was $30 on 2026-04-07.

PSA 8 — frequently asked

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

$25 as of 2026-06-16, our model-derived fair value for a PSA 8 Brock's Onix - 1st Edition Normal based on recent graded sales.

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

Its TCGBerg fair value has risen 5.7% over the past 90 days.

PSA 7 commentary

The TCGBerg fair value of a PSA 7 Brock's Onix - 1st Edition Normal is $25 as of 2026-06-16. This valuation carries high confidence (a confidence score of 71). Over the past 30 days the TCGBerg fair value has risen 27.0%. The most recent recorded sale was $26 on 2026-06-14.

PSA 7 — frequently asked

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

$25 as of 2026-06-16, our model-derived fair value for a PSA 7 Brock's Onix - 1st Edition Normal based on recent graded sales.

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

Its TCGBerg fair value has risen 27.0% over the past 30 days.

Brock's Onix #21, 1st Edition, Gym Heroes

Price history

Price spectrum

TCGBerg fair value by grade

All grades matrix

Active listings on eBay

About Gym Heroes

Recent sales

Population & rarity

Relative valuation vs. index

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

Other printings of Brock's Onix

Indices containing this card

Parent set

Brock's Onix #21, 1st Edition, Gym Heroes

Price spectrum

TCGBerg fair value by gradeSide-by-side comparison of fair value across every grade we track for this printing. The bar chart uses a log scale so raw and gem-mint fit on one axis.

All grades matrix

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.

About Gym Heroes

Recent sales

Population & rarityHow Brock's Onix'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 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.

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

Related

Other printings of Brock's Onix

Indices containing this card

Parent set

TCGBerg fair value by grade

Active listings on eBay

Population & rarity

Relative valuation vs. index