Professor Elm
Best of Promos · #3/9 · Promo · 2002
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.
How much is Professor Elm #3/9 worth?
Right now (September 28, 2026) the going rate for an ungraded Professor Elm #3/9 from Best of Promos is about $19.99.
Grading changes the math on this one: a PSA 10 is valued around $299.85, roughly 15.0x the raw price, while a PSA 9 sits near $54.99. 531 copies have been graded to date, and 25% 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 Professor Elm has moved over time.
