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Professor Oak's Research #149, Reverse Holo, Expedition Base Set

  • Card number: #149/165
  • Rarity: Uncommon

A PSA 9 Professor Oak's Research #149 Reverse Holo from Expedition Base Set has a TCGBerg fair value of $96 as of Nov 15, 2026. TCGBerg has recorded 6 PSA 9 sales of this card, the latest on Oct 23, 2026. PSA has graded 28 copies at PSA 9.

TCGBerg fair valuePSA 9
As of Nov 15, 2026
$96up 25.1%30-day change

TCGBerg Algorithm (estimated from recorded sales).

Fair value3 months
Last sale$130Oct 23, 202635.8% above fair
5-sale avg$75May 22Oct 23
Population · PSA 9
28
Market cap
$2.7K
Volatility
10.5%
YTD
↑ 146.4%
Sales evidence
Moderate

TCGBerg fair value · PSA 9

$96

30D25.1%YTD146.4%
Sales evidenceModerate
Market cap
$2.7K
fair value x population
Population
28
graded copies
Last sale
$130
+35.8% vs fair
5-sale avg
$75
recent sales
Grading

Price history

Open terminalPro

Weekly fair value for PSA 9.

Open in TerminalCandles, every grade, full historyPro

What the evidence says

The last PSA 9 sale, $130 on Oct 23, 2026, sits 35.8% above the $96 fair value. The value weighs 6 PSA 9 sales from the past year, not the latest one alone. Its confidence band runs from $80 to $111. A PSA 10 ($712) is worth 7.4 times a PSA 9 ($96). Over the past 30 days the PSA 9 value has risen 25.1%.

TCGBerg fair value by grade

Value at each grade and ungraded condition. Log scale. Tap a row to switch the whole page.

  • Raw NM$34Ungraded · market price
  • Raw LP$15Ungraded · market price
  • Raw MP$6.31Ungraded · market price
  • Raw Damaged$5.00Ungraded · market price
  • Raw HP$2.00Ungraded · market price
hatched = market price, not a TCGBerg fair value

Behind the scenes

What goes into this price, and how much we know.

Recent sales

13 tracked

Each sale against the grade's fair value on the day it sold.

  • $130
    Oct 23, 2026 · via eBay
    PSA9above fair value by 69.6%
  • $67
    Oct 5, 2026 · via eBay
    PSA9below fair value by 8.1%
  • $37
    Oct 2, 2026 · via tcgplayer
    Rawabove fair value by 13.3%
  • $28
    Oct 2, 2026 · via tcgplayer
    Rawbelow fair value by 13.3%
  • $100
    Sep 11, 2026 · via eBay
    PSA9above fair value by 43.2%

8 more sales with Pro

Up to 20 recent sales, each with its venue and its gap to fair value.

Includes a sale 45.9% below fair value

All grades matrix

Every grade we track for this printing.

  • CGC6$14
    1d -7d -30d -
    Pop
    1
    Mcap
    -
    Evidence
    Sparse
    Last
    -
  • CGC8-
    1d -7d -30d -
    Pop
    3
    Mcap
    -
    Evidence
    Sparse
    Last
    -
  • CGC Gem Mint 10$79
    1d -7d -30d -
    Pop
    11
    Mcap
    $869
    Evidence
    Sparse
    Last
    -
Listings
CGC6$141----Sparse-
CGC8-3----Sparse-
CGC Gem Mint 10$7911$869---Sparse-
CGC9.5$232$46---Sparse-
CGC9-11----Sparse$142y ago
PSA10$7129$6.4K0.0%down 22.3%down 0.9%Sparse$3406mo ago
PSA9$9628$2.7Kup 1.1%up 25.1%up 35.2%Moderate$1303w ago
PSA8$6629$1.9Kup 0.3%up 1.5%up 60.1%Limited$653mo ago
PSA7$3410$341down 0.2%down 2.4%up 34.2%Sparse$234mo ago
PSA6$264$1050.0%down 0.8%up 2.9%Sparse$161y ago
PSA5$262-0.0%down 0.8%up 12.1%Sparse-
Raw$34--0.0%down 2.2%up 13.6%-$371mo ago

Graded population report

134 graded copies of Professor Oak's Research Reverse Holo across 20 grades.

PSA 10
9 · 6.7%
PSA 9
28 · 21%
PSA 8
29 · 22%
PSA 7
10 · 7.5%
PSA 6
4 · 3.0%
BGS 9
2 · 1.5%
CGC Pristine 10
2 · 1.5%
CGC Gem Mint 10
11 · 8.2%
CGC 9.5
2 · 1.5%
CGC 9
11 · 8.2%
CGC 8.5
10 · 7.5%
CGC 8
3 · 2.2%
CGC 7.5
2 · 1.5%
CGC 7
2 · 1.5%
CGC 6.5
2 · 1.5%
CGC 6
1 · 0.7%
CGC 5
1 · 0.7%
CGC 4.5
2 · 1.5%
BGS 8
1 · 0.7%
PSA 5
2 · 1.5%

PSA 9 makes up 21% of graded copies: 28 of 134. PSA 8 is the most common grade (22%).

Analysis

Professor Oak's Research - Reverse Holo at PSA 10 carries a TCGBerg fair value of $712 as of 2026-11-14. We track a TCGBerg fair value across 9 grades from Expedition Base Set, from CGC 6 up to PSA 10. A graded population of 9 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 22.3%.

PSA 9 - frequently asked

How much is a PSA 9 Professor Oak's Research - Reverse Holo from Expedition Base Set worth?
$96 as of 2026-11-14, the model-derived TCGBerg fair value for a PSA 9 Professor Oak's Research - Reverse Holo from Expedition Base Set. It rests on moderate sales evidence. This estimate is not a guaranteed sale price.
What is the graded population of a PSA 9 Professor Oak's Research - Reverse Holo from Expedition Base Set?
28 copies have been graded at PSA 9, the recorded graded population, not the number of copies printed.
How has the PSA 9 Professor Oak's Research - Reverse Holo from Expedition Base Set price moved recently?
Its TCGBerg fair value has risen 25.1% over the past 30 days.
What did a PSA 9 Professor Oak's Research - Reverse Holo from Expedition Base Set last sell for?
The most recent recorded sale was $130 on 2026-10-23. This recorded sale is separate from the model-derived fair value.