Onix
Southern Islands · #3/18 · 2001
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.
PSA 10 chart is building — graded values are tracked nightly, a new point appears each day.
Graded population census · updated 2026-07-08
Population data from PriceCharting, updated monthly.
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OnixSouthern Island · 1999Attacks
“This Pokémon burrows through the earth at high speed, looking for food. The tunnels it digs are used by Diglett as nests.”
How much is Onix #3/18 worth?
A raw copy of Onix #3/18 (Southern Islands, 2001) is worth about $54.06 right now, based on the latest market data from August 22, 2026.
Grading changes the math on this one: a PSA 10 is valued around $372.78, roughly 6.9x the raw price, while a PSA 9 sits near $100.00. 973 copies have been graded to date, and 26% 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.
