Brock's Onix
City Gym Decks · #promo · None · 1998JPN
All 73 Onix cards ranked by value →Printings & price history
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Graded values
Grades 1–6 are estimates modeled from the raw price — PSA/CGC/BGS 7–10 and Ungraded are live tracked market values.
Grade 9.5 chart is building — graded values are tracked nightly, a new point appears each day.
Graded population census · updated 2026-09-17
Population data from PriceCharting, updated monthly.
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OnixTeam Rocket Returns · 2004How much is Brock's Onix #promo worth?
As of October 20, 2026, Brock's Onix #promo from City Gym Decks sells for around $9.85 in raw, ungraded condition. Across the 2 printings we track, copies run anywhere from $4.99 to $40.00 depending on the version you're holding.
Grading changes the math on this one: a PSA 10 is valued around $240.51, roughly 24.4x the raw price, while a PSA 9 sits near $22.16. 58 copies have been graded to date, and 55% of them came back a 10 — worth knowing before you pay grading fees.
These figures come from nightly market-data syncs verified against completed sales. Use the chart above to see the trend before you buy or sell.
