PokémonProfessor Oak's New Theory
Professor Oak's New Theory · HeartGold SoulSilver · #101/123 · Normal

Professor Oak's New Theory HeartGold SoulSilver #101/123 Raw NM price

HeartGold SoulSilver · #101/123 · Normal · English · Uncommon

NormalReverse Holofoil
Raw Near Mint market price$0.76Supported by recent sales · 1 in 30 days-5.0% past 30 days
Price date
Oct 14, 2026
Last Near Mint sale
Sep 28, 2026
Lowest listing (all printings)
$0.05
Sellers (all printings)
207
Normal · Near Mint on TCGplayer
Raw NM$0.76207 sellers

Price history

Professor Oak's New Theory price history. Nov 1, 2025 to Oct 14, 2026. Missing values are left as gaps.$0.7$0.8$0.9$1.0Nov 1Jan 26Apr 23Jul 19Oct 14
24H
0.0%
7D
+1.3%
30D
-5.0%
90D
-15.6%
6M
-14.6%

Price evidence

Supported by recent sales · 1 in 30 days

Raw Near Mint checks

CheckValueLimitResult
TCGplayer market price reported$0.76—Shown
Near Mint sales, last 30 / 90 days1 / 25At least 1 in 90 days, for this printingPass
Near Mint ÷ best of Lightly/Moderately Played1.4× ($0.76 vs $0.55)≤ 3× unless this printing's Near Mint sold in 90 daysn/a
Change vs prior 30-day median1.01× ($0.76 vs $0.75)Within 2× unless Near Mint soldn/a
Change vs previous price1.00× ($0.76 vs $0.76 on Oct 13, 2026)+75% / −45% unless Near Mint sold that weekn/a

Check Normal · Near Mint listings on TCGplayer

TCGplayer sales activity, last 90 days

DateConditionSalesMarket price that day
Oct 13, 2026Moderately Played1$0.41
Oct 12, 2026Lightly Played3$0.55
Oct 12, 2026Near Mint1$0.74
Oct 10, 2026Lightly Played3$0.55
Oct 10, 2026Moderately Played9$0.42
Oct 9, 2026Damaged1$0.47
Oct 7, 2026Lightly Played1$0.55
Oct 6, 2026Heavily Played1$0.35
Oct 4, 2026Heavily Played1$0.38
Oct 3, 2026Lightly Played1$0.54
Oct 3, 2026Moderately Played3$0.42
Oct 1, 2026Heavily Played1$0.37
Sep 29, 2026Lightly Played1$0.53
Sep 28, 2026Moderately Played2$0.42
Sep 28, 2026Near Mint1$0.75
Sep 22, 2026Lightly Played1$0.53
Sep 20, 2026Lightly Played1$0.53
Sep 20, 2026Moderately Played1$0.42
Sep 18, 2026Lightly Played1$0.53
Sep 17, 2026Lightly Played1$0.55
Sep 17, 2026Moderately Played1$0.42
Sep 16, 2026Moderately Played1$0.43
Sep 15, 2026Lightly Played3$0.53
Sep 14, 2026Moderately Played1$0.44
Sep 13, 2026Moderately Played2$0.44
Sep 12, 2026Heavily Played2$0.38
Sep 12, 2026Lightly Played7$0.52
Sep 11, 2026Near Mint1$0.80
Sep 10, 2026Lightly Played1$0.52
Sep 8, 2026Near Mint1$0.80
Sep 6, 2026Damaged3$0.44
Sep 4, 2026Lightly Played1$0.53
Sep 2, 2026Heavily Played1$0.38
Sep 2, 2026Near Mint2$0.82
Sep 1, 2026Lightly Played2$0.56
Aug 31, 2026Lightly Played1$0.55
Aug 30, 2026Lightly Played3$0.54
Aug 30, 2026Moderately Played9$0.44
Aug 28, 2026Near Mint1$0.82
Aug 26, 2026Near Mint1$0.83
Aug 24, 2026Lightly Played1$0.53
Aug 23, 2026Lightly Played1$0.53
Aug 23, 2026Moderately Played4$0.44
Aug 23, 2026Near Mint1$0.86
Aug 19, 2026Moderately Played3$0.44
Aug 13, 2026Near Mint2$0.86
Aug 10, 2026Lightly Played2$0.57
Aug 10, 2026Moderately Played5$0.44
Aug 6, 2026Lightly Played6$0.55
Aug 4, 2026Heavily Played1$0.39
Aug 4, 2026Moderately Played1$0.48
Aug 2, 2026Damaged1$0.44
Aug 2, 2026Heavily Played1$0.39
Aug 2, 2026Lightly Played1$0.56
Aug 2, 2026Moderately Played1$0.49
Aug 2, 2026Near Mint1$0.89
Jul 31, 2026Damaged1$0.44
Jul 31, 2026Heavily Played1$0.41
Jul 31, 2026Lightly Played1$0.56
Jul 31, 2026Moderately Played1$0.49
Jul 31, 2026Near Mint1$0.90
Jul 29, 2026Damaged1$0.44
Jul 29, 2026Heavily Played1$0.41
Jul 29, 2026Lightly Played1$0.54
Jul 29, 2026Moderately Played1$0.49
Jul 29, 2026Near Mint1$0.89
Jul 28, 2026Damaged1$0.44
Jul 28, 2026Heavily Played1$0.41
Jul 28, 2026Lightly Played1$0.52
Jul 28, 2026Moderately Played1$0.49
Jul 28, 2026Near Mint1$0.89
Jul 27, 2026Damaged1$0.44
Jul 27, 2026Heavily Played1$0.41
Jul 27, 2026Lightly Played1$0.52
Jul 27, 2026Moderately Played1$0.49
Jul 27, 2026Near Mint1$0.89
Jul 26, 2026Damaged1$0.44
Jul 26, 2026Heavily Played1$0.41
Jul 26, 2026Lightly Played1$0.52
Jul 26, 2026Moderately Played1$0.50
Jul 26, 2026Near Mint1$0.89
Jul 25, 2026Damaged1$0.44
Jul 25, 2026Heavily Played2$0.41
Jul 25, 2026Lightly Played2$0.55
Jul 25, 2026Moderately Played1$0.50
Jul 25, 2026Near Mint2$0.90
Jul 22, 2026Damaged2$0.45
Jul 22, 2026Heavily Played6$0.41
Jul 22, 2026Lightly Played6$0.55
Jul 22, 2026Moderately Played2$0.48
Jul 22, 2026Near Mint2$0.90
Jul 18, 2026Damaged1$0.46
Jul 18, 2026Heavily Played4$0.41
Jul 18, 2026Lightly Played3$0.55
Jul 18, 2026Moderately Played4$0.48
Jul 18, 2026Near Mint4$0.90
Jul 17, 2026Damaged1$0.47
Jul 17, 2026Heavily Played1$0.41
Jul 17, 2026Lightly Played1$0.55
Jul 17, 2026Moderately Played1$0.48
Jul 17, 2026Near Mint1$0.90

Ungraded sales · Normal

No ungraded sales matched to this printing yet.

Full price guide

Raw by condition

ConditionMarket price
Near Mint$0.76
Lightly Played$0.55
Moderately Played$0.42
Heavily Played$0.35
Damaged$0.47

As of Oct 14, 2026

Graded

Sold listings

0 sales · Normal · eBay · Fanatics

Cardmarket (EUR)

Trend
€0.21
30-day average
€0.20
7-day average
€0.23
Lowest listing
€0.02

As of Oct 15, 2026

Key facts

Raw Near Mint price
$0.76
Price date
Oct 14, 2026
30-day change
-5.0%
Set
HeartGold SoulSilver
Card number
101/123
Printing
Normal
Language
English
Rarity
Uncommon
Card type
Trainer
Pokémon type
Supporter
Stage
Supporter
HP
0
TCGplayer ID
88400

Raw Near Mint price history

WhenDatePriceChange to latest
LatestOct 14, 2026$0.76—
1 day earlierOct 13, 2026$0.760.0%
7 days earlierOct 7, 2026$0.75+1.3%
30 days earlierSep 14, 2026$0.80-5.0%
90 days earlierJul 16, 2026$0.90-15.6%
6 months earlierApr 15, 2026$0.89-14.6%
1 year earlier———

Attacks

  • Shuffle your hand into your deck. Then, draw 6 cards.