Pokémon TCG · Gym

Brock's Onix

Name: Brock's Onix - Gym Heroes #21
Brand: Pokémon TCG

Gym Heroes · #21 · Rare

Illustrated by Benimaru Itoh

Market price, 1st Edition $17.21 As of Oct 20, 2026 Worth a bit

A little. It runs about $17.21 raw, more than bulk but not a grail.

Listed as: Brock's Onix (21)

Lowest listing: $8.66 on Oct 20, 2026, any condition
Unlimited: $11.33 market price, lowest listing $6.73 on Oct 20, 2026

This market price has barely changed across the days we saved. It only updates when a copy sells, so it may rest on few recent sales.

Every saved price

Date	Market price
May 30, 2026	$12.61
Jun 2, 2026	$12.61
Jun 5, 2026	$12.61
Jun 8, 2026	$12.56
Jun 11, 2026	$12.56
Jun 14, 2026	$12.56
Jun 17, 2026	$12.56
Jun 20, 2026	$12.67
Jun 23, 2026	$12.67
Jun 26, 2026	$12.67
Jun 29, 2026	$12.74
Jul 2, 2026	$12.88
Jul 5, 2026	$13.16
Jul 8, 2026	$13.18
Jul 11, 2026	$13.15
Jul 13, 2026	$13.15
Oct 20, 2026	$17.21

#44 by market price in Gym Heroes on Oct 20, 2026 Ungraded. The market price is an average of recent online sales. We do not know how many sales it is based on. How card values work →

Supertype: Pokémon
Subtypes: Basic
HP: 70
TCG types: fighting
Set: Gym Heroes
Series: Gym
Released: 2000/08/14
Card number: 21