| Set | Gym Heroes |
| Card number | 21 |
| Rarity | Rare |
| Type | Pokémon |
| HP | 70 |
| Artist | Benimaru Itoh |
| Released | Aug 2000 |
Brock's Onix #21 Value (Gym Heroes)
Pokemon card price guide: raw and graded values, eBay sold prices and price history. Updated Nov 2, 2026.
Brock's Onix is a rare Pokémon card from the 2000 Gym Heroes set featuring art by Benimaru Itoh. Part of the Gym series, it represents the Rock-type Pokémon Brock used in the anime. This card is among the mid-tier rares in this set of 264 cards.
Current prices
| Source | Price |
|---|---|
| TCGplayer market price (USD) | $7.38 |
| Cardmarket lowest near mint (EUR) | €36.99 |
| Cardmarket 7-day average (EUR) | €9.92 |
| Cardmarket 30-day average (EUR) | €9.92 |
| Cardmarket listings available | 87 |
| eBay PSA 10 median (USD) | $301.63 |
Buy / compare: TCGplayer · eBay · eBay sold · Cardmarket
Have a copy in hand? Scan it with the Pokémon card scanner to confirm it is this exact printing.
What sets the price of Brock's Onix #21
Brock's Onix #21 is a Rare Pokémon card from Gym Heroes, the Gym era (2000). It ranks as number 39 by price out of 264 cards in the set. A PSA 10 sells for about 41x the raw price, so centering and surface condition decide most of what a copy is worth. Its price has held almost flat over the last 30 days ($7.38 to $7.38). The illustration is by Benimaru Itoh.
Graded card values (PSA, CGC, BGS)
| Grading | Grade | Median sold | Sales |
|---|---|---|---|
| CGC | 9 | $26.58 | 1 |
| PSA | 10 | $301.63 | 3 |
| PSA | 9 | $82.58 | 2 |
| PSA | 8 | $36.80 | 2 |
| PSA | 7 | $18.75 | 2 |
| SGC | 9 | $30.12 | 1 |
Graded values are medians of real eBay sold listings.
Brock's Onix price history
| Month | Avg Cardmarket low | Avg TCGplayer market |
|---|---|---|
| Nov 2026 | €36.99 | $7.38 |
| Oct 2026 | €14.82 | $7.38 |
| Sep 2026 | €9.50 | $7.51 |
| Aug 2026 | €8.92 | $7.56 |
| Jul 2026 | €10.00 | $7.45 |
| Jun 2026 | €7.75 | - |
| May 2026 | €6.00 | - |
| Apr 2026 | €6.31 | - |
| Mar 2026 | €5.95 | - |
| Feb 2026 | €5.89 | - |
Frequently asked questions
What is Brock's Onix #21 worth on Nov 2, 2026?
As of Nov 2, 2026, a raw near mint copy is worth about $7.38, a PSA 10 sells for around $301.63 on eBay, the Cardmarket low is €36.99. Prices update hourly from Cardmarket, TCGplayer and eBay sold listings.
What is a PSA 10 Brock's Onix #21 worth?
As of Nov 2, 2026, a PSA 10 Brock's Onix #21 sells for about $301.63 on eBay (median of recent graded sales), compared with about $7.38 for a raw near mint copy.
Is Brock's Onix #21 rare?
Brock's Onix #21 is printed at Rare rarity and ranks number 39 by price among the 264 cards in Gym Heroes. Demand for the character and condition matter more than the rarity symbol.
Is Brock's Onix #21 going up in value?
Not much right now. Its price has stayed within a few percent over the last 30 days, at about $7.38.
Is Brock's Onix #21 worth grading?
Often, if your copy is clean. A PSA 10 sells for about 40.9x raw ($294.25 more), but a PSA 9 is worth far less than a 10, so check centering, corners and surface first.
How do I check which printing of Brock's Onix I have?
Look at the set symbol and the card number (21) at the bottom of the card, then match both to this page. A phone scanner such as Card Value Scanner on iPhone reads them from one photo; on Android, search the number in the price guide.
Other Onix printings
Every Onix card and its current price
Most valuable cards in Gym Heroes
Gym Heroes card list · All Pokemon sets · Most valuable Pokemon cards
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