Impostor Professor Oak — Base #73, PSA 9

RareBase73/1021999PSA 9

Impostor Professor Oak 73/102 · Base PSA 9 price

PSA 9 · mint slab

$80

Fair buy $56 · sell $8012× rawUpdated today

Grade vs rawFull ladder →

Raw NM$6
PSA 9this page$8012×
PSA 10$39061×

PSA 9 sales: 1; 3 cert-verified
Last 90 days: 0; rare
Confidence: Low; Only 0 sales in the last 90 days.
Latest sale: 100d ago; psa 9

ViewingPSA 9Raw / ungraded →PSA 10 →Shadowless PSA 9 $64 →

Our published graded price for this card, checked against every cert-verified sale below. An estimate, not an appraisal. How we price →

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PSA 9 slabs for sale right now

Live asks for a PSA 9 of this exact card · stock as of today. A raw copy or a reverse holo is a different product and is not in this list.

No live listings in our latest snapshot for this grade — the marketplaces above search it directly.

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Why $80? Cert-verified PSA 9 sales

Each sale is tied by PSA to a specific graded slab — click the cert to check the exact card, grade and serial on psacard.com. Outliers against the grade’s own median are dropped; qualified slabs are listed separately beneath.

Date	Sold via	Cert	Price
2026-08-23	eBay · bestoffer	listing #70702311	$80
2026-08-17	eBay · bestoffer	listing #98021492	$142
2026-08-17	eBay · bestoffer	listing #98021492	$142

0 of 3 were competitive auctions; 3 best offers and 0 fixed-price.

PSA 9 price history

PSA 9 · index · latest

$80▲ 154%over 366 days

2025-10-04 → 2026-10-05

The recorded PSA 9 price index, held at the last cert-verified sale where our record lagged it, closing on the figure above. Hover any day for its price on the line.

Every PSA 9 sale we can show you

Cert-verified sales, the eBay comps, our own ledger and Fanatics, in one list newest first. We hold 1 PSA 9 sales with a median of $55; the ledger names its most recent eight, which is what this table can link to.

GraderGradeCert-verified only 3

	Grade	Venue	Date	Certificate	Price
1999 Pokémon Base Impostor Professor Oak 73/102 · PSA 9	PSA 9	eBayBestOffer	2026-08-23	70702311	$80.00
1999 Pokémon Base Impostor Professor Oak 73/102 · PSA 9	PSA 9	eBayBestOffer	2026-08-17	98021492	$142
1999 Pokémon Base Impostor Professor Oak 73/102 · PSA 9	PSA 9	eBayBestOffer	2026-08-17	98021492	$142
1999 Pokémon Imposter Professor Oak 73/102 CGC PSA 9 (Base Set)	PSA 9	eBay	2026-06-27	—	$55.00

1–4 of 4 sales · 3 carry a PSA certificate, checkable on psacard.com.

The ledger’s PSA 9 median ($55) sits below the published price above. The median is every recorded sale weighted equally; the price is the cert-verified market with outliers and qualified slabs removed, and is what the latest sales support.

How many PSA 9 copies exist

PSA’s cumulative census for this card. It counts resubmissions, so it skews toward nicer copies and overstates the rate a fresh submission should expect.

PSA 9 population

553

47.8% of 1,158 graded

Graded higher

169

PSA 10s above this grade

Total PSA graded

1,158

every grade, all time

Other graders at a 9: CGC 55 of 249. A CGC or BGS 9 is its own market and is not in the price above.

Is Impostor Professor Oak worth grading?

Every grade weighted by how often this card actually earns it — the PSA 9 outcome is one leg, not the whole answer.

Verdict

Not worth it

every grade weighted by its census share

Expected net

$-25

after fees, all grades

Comes back PSA 9

2210%

of submissions, by the census

PSA 9 outcome

$-7

PSA 9 net of raw and fee

Grading cost

$81

tier fee + shipping

Trader

Compare graders, and the live market

The verdict above is PSA's — the grader the population, the ROI table and the ladder on this page all use. Trader prices all three graders against each other and adds what the asking market is doing right now.

Trader plan and above →

PSA, CGC and Beckett side by side — each on its own population and fees, Beckett scored on the 9.5 its market pays for.
Lightly and moderately played — the same expected return for a copy that cannot gem.
Ask vs sold — what the live listings want, against what copies have really closed at.
Momentum — the 30-day median against the 90-day, per grade.
Where it sells higher — the Fanatics-versus-eBay premium, with the sale counts behind it.
Population history — the weekly PSA census, so you can see how fast 10s are arriving before you post the card.

Built on 12 graded sales and a population of 1,889,841 · fees as of 2026-10-03.

More Impostor Professor Oak and more from Base

Prices are raw near mint; PSA 10 shown where we have one.

Cite this PSA 9 pricefree with attribution

Citation

Impostor Professor Oak (Base #73) — PSA 9 market value USD $80, from 3 cert-verified sales. Source: CardTrack, https://cardtrack.com/pokemon/card/base/impostor-professor-oak-73/psa-9

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Frequently asked questions

How much is a PSA 9 Impostor Professor Oak (Base #73) worth?

As of 5 October 2026, a PSA 9 mint Impostor Professor Oak from Base is worth approximately $80, with a fair range of $56 to $80 — about 12× the $6 raw near-mint price.

Where does the PSA 9 price come from?

From 3 cert-verified PSA 9 sales, each tied by PSA to a specific slab with a public cert number — 0 at auction, 3 by best offer and 0 at a fixed price.

How many PSA 9 Impostor Professor Oak exist?

PSA has graded 553 copies of Impostor Professor Oak (Base #73) a 9, out of 1,158 submitted — 47.8% of the population, with 169 graded higher. The census counts resubmissions, so it overstates the gem rate a fresh submission should expect.

Should I grade my Impostor Professor Oak hoping for a PSA 9?

Probably not. Weighting every grade by how often this card earns it, expected value after the $81 grading fee is about $-25; this card comes back a PSA 9 about 2210% of the time.

Is a PSA 9 Impostor Professor Oak a good investment?

CardTrack tracks prices; it does not give investment advice. A PSA 9 Impostor Professor Oak has 1 recorded sales, and the slab-history table above shows what happened to copies that sold twice. Read those before you read anyone's forecast.