Horsea
McDonald's Promos 2018 · #3/12 · Promo · 2018
All 71 Horsea cards ranked by value →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 2026-09-17
Population data from PriceCharting, updated monthly.
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Horsea of the Seafoam IslandsVending Machine cards Series 3 (Green) · 2026How much is Horsea #3/12 worth?
As of September 26, 2026, Horsea #3/12 from McDonald's Promos 2018 sells for around $8.49 in raw, ungraded condition.
Grading changes the math on this one: a PSA 10 is valued around $59.75, roughly 7.0x the raw price, while a PSA 9 sits near $26.85. 19 copies have been graded to date, and 0% of them came back a 10 — worth knowing before you pay grading fees.
We update this valuation every night from live market data and verify it against real completed sales — see the chart above for how Horsea has moved over time.
