Professor Oak's Research - Normal, Expedition Base Set

tcgberg

Pichu HoloNEOPSA 8$17015.2%

Lugia HoloNEOPSA 9$2,6971.2%

Dark Weezing 1st EditionROKPSA 10$9322.0%

Charizard ex HoloMEWPSA 8$3790.8%

Machamp 1st Edition ShadowlessBASPSA 8$1211.3%

Alakazam ex HoloMEWPSA 10$3642.2%

Dark Charizard 1st EditionROKPSA 7$9470.6%

Snorlax HoloJUNPSA 8$2911.9%

Slowking HoloNEOPSA 6$650.4%

Kingdra HoloNEOPSA 7$355.7%

Ivysaur UnlimitedBASPSA 8$472.0%

Venusaur UnlimitedBASPSA 8$3071.7%

Gengar HoloMEWPSA 10$2560.8%

Togetic HoloNEOPSA 8$880.6%

Gust of Wind UnlimitedBASPSA 9$380.2%

Electabuzz UnlimitedBASPSA 8$320.0%

Dark Porygon2 1st EditionNDEPSA 10$5,124187.1%

Charizard 1st Edition ShadowlessBASPSA 10$416,5410.5%

Magikarp NormalMEWPSA 7$7500.0%

Dratini Reverse HoloLGCPSA 6$18077.0%

Pikachu 1st Edition Red CheeksBASPSA 10$26,4297.9%

Charmander Eb Games ExclusiveMEWPSA 9$2780.4%

Charmander Reverse HoloEXPPSA 8$15972.1%

Blastoise ex HoloMEWPSA 10$6260.7%

Charmander HoloMEWPSA 9$1380.5%

Venusaur Reverse HoloLGCPSA 8$1,73768.9%

Shining Charizard 1st EditionNDEPSA 10$41,66620.6%

Eevee Pokemon TogetherMEWPSA 9$1217.6%

Omastar Reverse HoloLGCPSA 7$14661.6%

Charizard UnlimitedBASPSA 10$22,95513.1%

Squirtle Pokemon Center 151 Pre-Order PromoMEWPSA 9$1182.9%

Cubone Reverse HoloEXPPSA 9$60844.1%

Lugia 1st EditionNEOPSA 8$5,1464.0%

Squirtle HoloMEWPSA 9$1181.4%

Pikachu NormalEXPPSA 7$19440.4%

Charizard ShadowlessBASPSA 9$10,4850.2%

Pikachu Pokemon TogetherMEWPSA 8$1071.3%

Nidorino Reverse HoloLGCPSA 9$47737.1%

Charizard Reverse HoloLGCPSA 9$16,6711.4%

Pikachu HoloMEWPSA 9$1040.7%

Ivysaur Reverse HoloLGCPSA 7$28536.8%

Venusaur ex HoloMEWPSA 10$5001.7%

Gastly Reverse HoloLGCPSA 8$41833.0%

Blastoise 1st Edition ShadowlessBASPSA 9$10,6930.4%

Bulbasaur NormalEXPPSA 9$9531.3%

Blaine's Charizard 1st EditionGYCPSA 10$18,1180.3%

Tentacruel Reverse HoloLGCPSA 9$47229.3%

Shining Charizard NormalNDEPSA 10$17,25513.5%

Mewtwo NormalEXPPSA 7$15227.5%

Zapdos ex HoloMEWPSA 10$4712.5%

Professor Oak's Research - Normal, Expedition Base Set | TCGBerg

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$45
1d 0.0%7d 0.0%30d 0.0%
Pop
9
Mcap
$405
Conf
34
Last
$340
PSA9$34
1d 0.4%7d 0.4%30d 0.4%
Pop
27
Mcap
$931
Conf
45
Last
$49
PSA8$14
1d 0.0%7d 0.0%30d 0.0%
Pop
26
Mcap
$375
Conf
38
Last
$15


PSA10	$45	9	$405	0.0%	0.0%	0.0%	13.6%	—	34	$3401mo ago
PSA9	$34	27	$931	0.4%	0.4%	0.4%	37.9%	—	45	$491mo ago
PSA8	$14	26	$375	0.0%	0.0%	0.0%	0.1%	—	38	$158mo ago
PSA7	$12	10	$117	0.0%	0.0%	0.6%	2.3%	—	39	$122w ago
PSA6	$16	4	$64	0.0%	0.0%	0.0%	0.0%	—	19	$1610mo ago
Raw	$2	—	—	6.3%	6.3%	1.1%	4.3%	—	—	—

Recent sales

Most recent transactions. From public auction comps and dealer reporting. Showing 4 of 4; delta vs fair value is the difference between the sale price and the grade's quoted fair value on that date.

Date	Grade	Price	Source	vs TCGBerg FV
May 10, 2026	PSA10	$340	ebay	655.7%
Apr 5, 2026	PSA10	$45	ebay	13.6%
Apr 5, 2026	PSA10	$45	ebay	13.6%
Oct 22, 2025	PSA10	$45	ebay	13.6%

May 10, 2026PSA10
$340655.7%
via ebay
Apr 5, 2026PSA10
$4513.6%
via ebay
Apr 5, 2026PSA10
$4513.6%
via ebay

Analysis

Professor Oak's Research - Normal at PSA 10 carries a TCGBerg fair value of $45 as of 2026-06-22. We track a TCGBerg fair value across 5 grades from Expedition Base Set, from PSA 7 up to PSA 10. A graded population of 9 copies sits behind the PSA 10 grade. The PSA 10 valuation carries low confidence (a confidence score of 34). Over the past 30 days, the PSA 7 TCGBerg fair value has fallen 0.6%.

Show more analysis

PSA 10 commentary

The TCGBerg fair value of a PSA 10 Professor Oak's Research - Normal is $45 as of 2026-06-22. 9 copies have been graded at this level. This valuation carries low confidence (a confidence score of 34). Over the past 90 days the TCGBerg fair value has risen 13.6%.

PSA 10 — frequently asked

What is the TCGBerg fair value of a PSA 10 Professor Oak's Research - Normal?

$45 as of 2026-06-22, our model-derived fair value for a PSA 10 Professor Oak's Research - Normal based on recent graded sales.

How rare is a PSA 10 Professor Oak's Research - Normal?

9 copies have been graded at PSA 10, the graded population behind this atom.

How has the PSA 10 Professor Oak's Research - Normal price moved recently?

Its TCGBerg fair value has risen 13.6% over the past 90 days.

PSA 9 commentary

The TCGBerg fair value of a PSA 9 Professor Oak's Research - Normal is $34 as of 2026-06-22. 27 copies have been graded at this level. This valuation carries medium confidence (a confidence score of 45). Over the past 30 days the TCGBerg fair value has fallen 0.4%. The most recent recorded sale was $49 on 2026-05-22.

PSA 9 — frequently asked

What is the TCGBerg fair value of a PSA 9 Professor Oak's Research - Normal?

$34 as of 2026-06-22, our model-derived fair value for a PSA 9 Professor Oak's Research - Normal based on recent graded sales.

How rare is a PSA 9 Professor Oak's Research - Normal?

27 copies have been graded at PSA 9, the graded population behind this atom.

How has the PSA 9 Professor Oak's Research - Normal price moved recently?

Its TCGBerg fair value has fallen 0.4% over the past 30 days.

PSA 8 commentary

The TCGBerg fair value of a PSA 8 Professor Oak's Research - Normal is $14 as of 2026-06-22. 26 copies have been graded at this level. This valuation carries low confidence (a confidence score of 38). Over the past 90 days the TCGBerg fair value has risen 0.1%. The most recent recorded sale was $14 on 2025-10-19.

PSA 8 — frequently asked

What is the TCGBerg fair value of a PSA 8 Professor Oak's Research - Normal?

$14 as of 2026-06-22, our model-derived fair value for a PSA 8 Professor Oak's Research - Normal based on recent graded sales.

How rare is a PSA 8 Professor Oak's Research - Normal?

26 copies have been graded at PSA 8, the graded population behind this atom.

How has the PSA 8 Professor Oak's Research - Normal price moved recently?

Its TCGBerg fair value has risen 0.1% over the past 90 days.

PSA 7 commentary

The TCGBerg fair value of a PSA 7 Professor Oak's Research - Normal is $12 as of 2026-06-22. 10 copies have been graded at this level. This valuation carries low confidence (a confidence score of 39). Over the past 30 days the TCGBerg fair value has fallen 0.6%. The most recent recorded sale was $12 on 2026-06-07.

PSA 7 — frequently asked

What is the TCGBerg fair value of a PSA 7 Professor Oak's Research - Normal?

$12 as of 2026-06-22, our model-derived fair value for a PSA 7 Professor Oak's Research - Normal based on recent graded sales.

How rare is a PSA 7 Professor Oak's Research - Normal?

10 copies have been graded at PSA 7, the graded population behind this atom.

How has the PSA 7 Professor Oak's Research - Normal price moved recently?

Its TCGBerg fair value has fallen 0.6% over the past 30 days.

PSA 6 commentary

The TCGBerg fair value of a PSA 6 Professor Oak's Research - Normal is $16 as of 2026-06-22. 4 copies have been graded at this level. This valuation carries very low confidence (a confidence score of 19). The most recent recorded sale was $16 on 2025-08-17.

PSA 6 — frequently asked

What is the TCGBerg fair value of a PSA 6 Professor Oak's Research - Normal?

$16 as of 2026-06-22, our model-derived fair value for a PSA 6 Professor Oak's Research - Normal based on recent graded sales.

How rare is a PSA 6 Professor Oak's Research - Normal?

4 copies have been graded at PSA 6, the graded population behind this atom.

Professor Oak's Research #149, Normal, Expedition Base Set

Price history

Price spectrum

TCGBerg fair value by grade

All grades matrix

Active listings on eBay

About Expedition Base Set

Recent sales

Population & rarity

Relative valuation vs. index

Analysis

PSA 10 commentary

PSA 10 — frequently asked

PSA 9 commentary

PSA 9 — frequently asked

PSA 8 commentary

PSA 8 — frequently asked

PSA 7 commentary

PSA 7 — frequently asked

PSA 6 commentary

PSA 6 — frequently asked

Other printings of Professor Oak's Research

Indices containing this card

Parent set

Professor Oak's Research #149, Normal, Expedition Base Set

Price spectrum

TCGBerg fair value by gradeSide-by-side comparison of fair value across every grade we track for this printing. The bar chart uses a log scale so raw and gem-mint fit on one axis.

All grades matrix

Active listings on eBayLive asking prices from eBay sellers. The delta shows how each ask compares to TCGBerg's quoted fair value for that grade. Verified deals are marked from the published analytics feed.

About Expedition Base Set

Recent sales

Population & rarityHow Professor Oak's Research'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. Fewer copies at a grade = scarcer = a scarcity premium.

Relative valuation vs. indexBoth series are indexed to 100 at May 10, 2026, the index’s inception date, not the start of the selected range. A divergence means the card has outperformed or underperformed the index since then, by exactly the percentage-point gap.

Analysis

PSA 10 commentary

PSA 10 — frequently asked

PSA 9 commentary

PSA 9 — frequently asked

PSA 8 commentary

PSA 8 — frequently asked

PSA 7 commentary

PSA 7 — frequently asked

PSA 6 commentary

PSA 6 — frequently asked

Related

Other printings of Professor Oak's Research

Indices containing this card

Parent set

TCGBerg fair value by grade

Active listings on eBay

Population & rarity

Relative valuation vs. index