Gym Heroes/#21/132Gembook Valuei·PSA 9As of Jun 14, 2026 · updated daily at 6:00 AM PT
Confidence Limited · weighted median of 7 verified sales
Fair range $65 – $65
Confidence Limited · weighted median of 7 verified sales
Fair range $65 – $65
Brock's Onix
$65#7594 Overall#323 in Gym Heroes▼ 0.2%SET · 30D
1ST EDITION · PSA 9G
Price History▲ 62.5%
Details
SetGym Heroes
Number21 / 132
Released2000
PSA population140
Price confidenceLimited
Fair range$65 – $65
Last sale$65 · Apr 25, 2026
Live listings0 · checked daily
Recent sales
7 verified · 15 shownApr 25, 2026eBay$65+$0
Feb 27, 2026eBay$65+$0
Nov 3, 2025eBay$35−$30
Sep 7, 2025eBay$25−$40
Aug 27, 2025eBay$28−$37
Live listings
No live listings right now. New eBay listings for this card appear here within a day of going up.
How we price this
Gembook Value is the weighted median of 7 verified eBay sales. Shill bids, unpaid items, and outliers are filtered out — the numbers you see actually cleared.