Imposter Professor Oak #T89, Unlimited, Expansion Pack
Japanese edition
- Card number: #T89
- ·Rarity: Rare
- ·Finish: Non-Holo
A PSA 9 Imposter Professor Oak #T89 Unlimited from Expansion Pack has a TCGBerg fair value of $69 as of Nov 14, 2026. It rests on 19 recorded sales, the latest on Aug 31, 2026. PSA has graded 86 copies at PSA 9. Sales evidence is limited, so treat this value as a rough estimate.
TCGBerg Algorithm (estimated from recorded sales).
19 sales · latest Aug 31, 2026
- Population · PSA 9
- 86
- Market cap
- $6.0K
- Volatility
- 1.1%
- YTD
- ↑ 115.5%
- Sales evidence
- Limited
TCGBerg fair value · PSA 9
$69
Based on 19 recorded sales. Latest sale: Aug 31, 2026.
Price history
Weekly fair value over time, plus a confidence band around it: how precisely we can pin the value, which tightens as more sales confirm it. Dots mark individual sales, snapped to their week: red when above fair value (a premium), green when below (a deal), hollow when flagged as an outlier. Switch the active grade with the selector above.Weekly fair value for PSA 9. Shaded area is the confidence band: how precisely we can pin the value; it tightens as more sales confirm it. Dots are individual sales. Confidence band: how precisely we can pin the fair value. It widens when sales scatter and narrows as more sales back the value up. The dots show the actual sale prices.
What the evidence says
The last PSA 9 sale, $57 on Aug 31, 2026, sits 17.9% below the $69 fair value. The value rests on 19 recorded PSA 9 sales. The latest sale ran below the recent run: the last 5 PSA 9 sales averaged $65, within 6.0% of the value. Its confidence band runs from $60 to $79. A PSA 10 ($1,058) is worth 15.2 times a PSA 9 ($69). Over the past 30 days the PSA 9 value has risen 2.0%. With limited sales evidence, read the gap and the band as rough guides.
TCGBerg fair value by grade
Side-by-side comparison of value across every grade and ungraded condition we track for this printing. The bar chart uses a log scale so raw and gem-mint fit on one axis. Solid bars are the TCGBerg fair value, modelled from recorded sales. Hatched bars are the latest market price instead, shown for ungraded conditions that trade too rarely for us to price one honestly.Value at each grade and ungraded condition. Log scale. Tap a row to switch the whole page.
- Raw NM$16Ungraded · market price
- Raw LP$12Ungraded · market price
- Raw MP$9.11Ungraded · market price
- Raw HP$6.75Ungraded · market price
- Raw Damaged$2.44Ungraded · market price
Behind the scenes
How the published fair value for this grade was produced: the sales it rests on, how they were put together, and every recorded change afterwards. It describes one saved calculation, not a live recomputation.What goes into this price, and how much we know.
Recent sales
20 trackedEach sale against the grade's fair value on the day it sold.
| Date | Grade | Venue | Price | vs fair value |
|---|---|---|---|---|
| Oct 9, 2026 | PSA10 | eBay | $3,000 | above fair value by +134.1% |
| Oct 5, 2026 | PSA8 | Fanatics Collect | $23 | below fair value by -28.4% |
| Sep 16, 2026 | PSA10 | eBay | $598 | above fair value by +4.9% |
| Aug 31, 2026 | PSA9 | eBay | $57 | below fair value by -0.6% |
| Aug 28, 2026 | PSA10 | eBay | $600 | above fair value by +11.5% |
- $3,000Oct 9, 2026 · via eBayPSA10↑above fair value by 134.1%
- $23Oct 5, 2026 · via Fanatics CollectPSA8↓below fair value by 28.4%
- $598Sep 16, 2026 · via eBayPSA10↑above fair value by 4.9%
- $57Aug 31, 2026 · via eBayPSA9↓below fair value by 0.6%
- $600Aug 28, 2026 · via eBayPSA10↑above fair value by 11.5%
| Aug 24, 2026 | PSA7 | eBay | $20 | below fair value by -7.1% |
| Aug 24, 2026 | PSA9 | eBay | $56 | above fair value by +3.3% |
| Aug 11, 2026 | PSA9 | eBay | $18 | below fair value by -71.9% |
- $20PSA7↓below fair value by 7.1%
- $56PSA9↑above fair value by 3.3%
- $18PSA9↓below fair value by 71.9%
15 more sales with Pro
Up to 20 recent sales, each with its venue and its gap to fair value.
↓Includes a sale 71.9% below fair value
All grades matrix
Every grade we track for this printing. Click any column header to sort; the rightmost column jumps you to listings for that grade.
- PSA10$1,0581d ·0.0%7d ·0.0%30d ↓13.2%
- Pop
- 63
- Mcap
- $66.6K
- Evidence
- Sparse
- Last
- $3,000
- PSA9$691d ↓0.1%7d ↓0.4%30d ↑2.0%
- Pop
- 86
- Mcap
- $6.0K
- Evidence
- Limited
- Last
- $57
- PSA8$321d ↑0.1%7d ↑0.6%30d ↑1.1%
- Pop
- 47
- Mcap
- $1.5K
- Evidence
- Sparse
- Last
- $23
| PSA10 | $1,058 | 63 | $66.6K | 0.0% | 0.0% | ↓down 13.2% | ↑up 158.0% | Sparse | $3,0001mo ago |
| PSA9 | $69 | 86 | $6.0K | ↓down 0.1% | ↓down 0.4% | ↑up 2.0% | ↓down 18.9% | Limited | $573mo ago |
| PSA8 | $32 | 47 | $1.5K | ↑up 0.1% | ↑up 0.6% | ↑up 1.1% | ↓down 0.7% | Sparse | $231mo ago |
| PSA7 | $21 | 17 | $362 | 0.0% | 0.0% | ↓down 4.8% | ↓down 3.8% | Limited | $203mo ago |
| PSA6 | $21 | 11 | $233 | 0.0% | ↓down 0.1% | ↓down 4.9% | ↑up 17.8% | Sparse | $209mo ago |
| PSA5 | $21 | 6 | - | 0.0% | 0.0% | ↓down 4.8% | ↑up 17.3% | Sparse | - |
| Raw | $16 | - | - | 0.0% | 0.0% | ↓down 2.7% | ↑up 3.1% | - | - |
PSA population report
How Imposter Professor Oak's graded copies are spread across grades. Each bar is the number of copies graded at that grade; the percentage is that grade's share of the total graded population. These are recorded graded copies, not the total print run. A smaller population alone does not establish a price premium.230 graded copies of Imposter Professor Oak Unlimited across 6 grades. The selected grade is highlighted.
PSA 9 makes up 37% of graded copies: 86 of 230. It’s the most common grade for this card.
Analysis
Imposter Professor Oak - Unlimited at PSA 10 carries a TCGBerg fair value of $1,058 as of 2026-11-13. We track a TCGBerg fair value across 6 grades from Expansion Pack, from PSA 5 up to PSA 10. A graded population of 63 copies sits behind the PSA 10 grade. The PSA 10 valuation rests on sparse sales evidence. Over the past 30 days, the PSA 10 TCGBerg fair value has fallen 13.2%.