Brock's OnixGym Heroes 21/132 price & value
Ungraded · near mint
Strong data$9.92
- PSA 10
- $387
- PSA 9
- $22.23
- PSA 8
- $11.27
Prices updated today · How we price cards
Printings
- Unlimited · this page$9.92 ungraded
- 1st Edition$23.08 ungraded
About this card
As of Sep 28, 2026, Brock's Onix 21/132 from Gym Heroes is worth about $9.92 ungraded in near-mint condition and $387 graded PSA 10. That value is based on 69 recorded sales in the last 90 days.
This page prices the Unlimited print. A 1st Edition Brock's Onix sells for about $23.08 ungraded.
Brock's Onix is card 21 of 132 in the Gym Heroes price guide, a set released in August 2000 during the Wizards of the Coast era. Its rarity is Rare. The artwork is by Benimaru Itoh. In the checklist it sits after Brock's Golem 20/132 and before Brock's Rhyhorn 22/132.
It is the 36th most valuable of the 132 priced cards in Gym Heroes, behind Sabrina's Gengar 14/132 (see the most valuable Gym Heroes cards). A PSA 10 copy is valued at about 39× the ungraded price, and a PSA 9 at $22.23, so condition matters a lot for this card.
It is one of 31 English Onix cards, and ranks 3rd among them by ungraded value; the most valuable is Onix from Southern Islands. Compare them all in the most valuable Onix cards.
Price history
- Now
- $9.92
- 4 weeks
- −15%
- 90 days
- +24%
- 1 year
- +66%
- Highest
- $12.09
- Lowest
- $1.25
Recorded history starts January 2021. Earlier history is monthly averages; from July 22, 2026 the line is a 7-day average of daily prices, so single-day swings don’t show.
Matched sold listings
Recent sales
18 on record
PSA 10PSA 10 Brock's Onix Gym Heroes 21/132 Unlimited Pokemon Card GEM MINT POP 22Sep 25, 2026 · eBay · View listing$297
RawPokémon TCG Brock's Onix 21/132 Gym Heroes Rare Regular English LPSep 21, 2026 · eBay · Listed as lightly played · View listing$7.78- CGC 8.52000 Pokemon Gym Heroes Brock's Onix #21 CGC 8.5 NM-MT+Sep 21, 2026 · Fanatics Collect · View listing$7.00
- CGC 8.52000 Pokemon Gym Heroes Brock's Onix #21 CGC 8.5 NM-MT+Sep 21, 2026 · Fanatics Collect · View listing$7.00
RawBrock's Onix 21/132 Rare Gym Heroes Pokemon Unlimited Moderately PlayedSep 20, 2026 · eBay · Listed as moderately played · View listing$7.49
RawPokemon - 21/132 - Brock's Onix (21) - Unlimited - Gym HeroesSep 19, 2026 · eBay · View listing$20.03
RawPokémon TCG Brock's Onix Gym Heroes 21/132 Unlimited RareSep 19, 2026 · eBay · View listing$8.00
RawPokémon TCG Gym Heroes Brock's Onix 21/132 1stSep 19, 2026 · eBay · View listing$9.00
Card details
- Set
- Gym Heroes
- Number
- 21/132
- Rarity
- Rare
- Released
- Aug 14, 2000
- Pokémon
- Onix
- Pokédex no.
- #0095
- Illustrator
- Benimaru Itoh
- Printings
- 1st Edition, Unlimited
Gym Heroes
Other Onix cards in this set
Same Pokémon
Most valuable Onix cards
Before this set
Earlier versions
After this set
Later versions
Next in the binder
Nearby in Gym Heroes
Lt. Surge
Gym Heroes · 17/132
$39.78Misty
Gym Heroes · 18/132
$71.83The Rocket's Trap
Gym Heroes · 19/132
$27.41Brock's Golem
Gym Heroes · 20/132
$16.89Brock's Rhyhorn
Gym Heroes · 22/132
$12.65Brock's Sandslash
Gym Heroes · 23/132
$13.56Brock's Zubat
Gym Heroes · 24/132
$12.22Erika's Clefairy
Gym Heroes · 25/132
$12.37
Gym Heroes
Chase cards from this set
Common questions
How much is Brock's Onix 21/132 Gym Heroes worth?
As of Sep 28, 2026, Brock's Onix 21/132 Gym Heroes is worth about $9.92 ungraded in near-mint condition. Recent prices range from $8.72 to $12.66. A PSA 10 copy is worth about $387. How we price cards.
How much is a PSA 10 Brock's Onix 21/132 worth?
A PSA 10 Brock's Onix 21/132 Gym Heroes is worth about $387; PSA 9 about $22.23; PSA 8 about $11.27; PSA 7 about $9.00. That is about 39× the ungraded value.
How often does Brock's Onix 21/132 sell?
Brock's Onix 21/132 Gym Heroes recorded 69 sales in the last 90 days (27 in the last 30), most recently on Sep 25, 2026. The highest recent sale was $297 for a PSA 10 copy on Sep 25, 2026.
What is the most valuable card in Gym Heroes?
The most valuable card in Gym Heroes is Sabrina's Gengar 14/132, at about $499 ungraded. Brock's Onix 21/132 ranks 36th of 132. See the full Gym Heroes ranking.
What set is Brock's Onix 21/132 from?
Brock's Onix 21/132 is from the English Pokémon TCG set Gym Heroes, released Aug 14, 2000, in the Wizards of the Coast era. Its rarity is Rare.