Professor Oak's New Theory
PokémonHeartGold SoulSilver#101
- Language
- English
- Finish
- Regular
- Rarity
- Uncommon
- Number
- 101
- Versions
- English · Regular · English · Reverse holo · German · Other · French · Other
Seller offers
External offers
Offers on eBay
Marketplace: Germany · 4 offers
Professor Oak's New Theory - HS #101/123 HeartGold SoulSilver Ken Sugimori LP
EN · Nonfoil · Condition: Nicht bewertet
Available externally
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Last checked: Oct 2, 2026, 3:10 PM
Professor Oak's New Theory 101/123 HeartGold & SoulSilver Pokemon LP
EN · Nonfoil · Condition: Ungraded
Available externally
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Last checked: Oct 2, 2026, 3:10 PM
Professor Oak's New Theory 101/123 Uncommon HeartGold & SoulSilver Pokemon LP
EN · Nonfoil · Condition: Ungraded
Available externally
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Last checked: Oct 2, 2026, 3:10 PM
Professor Oak's New Theory 101/123 HGSS Pokemon Karte EXC
EN · Nonfoil · Condition: Ungraded
Available externally
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Last checked: Oct 2, 2026, 3:10 PM
More results on eBay
3 more resultsProfessor Oak's New Theory 101/123 Uncommon HeartGold & SoulSilver Pokemon LP
Marketplace: GermanyMatch not confirmed
Professor Oak's New Theory 101/123 HG&SS Pokemon NM
Marketplace: GermanyMatch not confirmed
Professor Oak's New Theory 101/123 (HeartGold/SoulSilver Base Set) Pokemon TCG
Marketplace: GermanyMatch not confirmed
The offer status has been updated.
Price development
- Oldest value
- €0.05
- Sep 25, 2026
- Lowest
- €0.02
- Sep 29, 2026
- Highest
- €0.24
- Oct 15, 2026
- Change in period
- +380 %
- €0.24
24 price points from Sep 25, 2026 to Oct 24, 2026. Hover or touch the curve to read values.
Price profile of the last 30 days (rolling averages)
Standard
- Trend
- €0.24
- Ø 1 day
- €0.15
- Ø 7 days
- €0.16
- Ø 30 days
- €0.18
- Lowest
- €0.02
Holo
- Trend
- €2.74
- Ø 1 day
- €2.53
- Ø 7 days
- €2.13
- Ø 30 days
- €1.97
- Lowest
- €0.49
24 snapshots from 25 Sept 2026 to 24 Oct 2026. Line: trend, dashed: lowest price.
Values as table
| As of | Standard Trend | Standard Ø 1 day | Standard Ø 7 days | Standard Ø 30 days | Standard Lowest | Holo Trend | Holo Ø 1 day | Holo Ø 7 days | Holo Ø 30 days | Holo Lowest |
|---|---|---|---|---|---|---|---|---|---|---|
| 25 Sept 2026 | €0.05 | €0.02 | €0.14 | €0.20 | €0.02 | €2.74 | €3.00 | €1.96 | €1.92 | €0.40 |
| 26 Sept 2026 | €0.03 | €0.02 | €0.14 | €0.20 | €0.02 | €2.74 | €3.00 | €1.96 | €1.92 | €0.40 |
| 29 Sept 2026 | €0.02 | €0.02 | €0.14 | €0.20 | €0.02 | €2.74 | €3.00 | €1.96 | €1.92 | €0.40 |
| 30 Sept 2026 | €0.02 | €0.02 | €0.14 | €0.20 | €0.02 | €2.74 | €3.00 | €1.96 | €1.92 | €0.40 |
| 2 Oct 2026 | €0.02 | €0.02 | €0.14 | €0.20 | €0.02 | €2.74 | €3.00 | €1.96 | €1.92 | €0.20 |
| 3 Oct 2026 | €0.02 | €0.02 | €0.14 | €0.20 | €0.02 | €2.74 | €3.00 | €1.96 | €1.92 | €0.20 |
| 4 Oct 2026 | €0.02 | €0.18 | €0.16 | €0.20 | €0.02 | €2.74 | €2.53 | €2.13 | €1.97 | €0.40 |
| 6 Oct 2026 | €0.14 | €0.15 | €0.17 | €0.17 | €0.02 | €2.74 | €2.53 | €2.13 | €1.97 | €0.40 |
| 7 Oct 2026 | €0.21 | €0.61 | €0.24 | €0.19 | €0.02 | €2.74 | €2.53 | €2.13 | €1.97 | €0.49 |
| 8 Oct 2026 | €0.22 | €0.61 | €0.24 | €0.19 | €0.02 | €2.74 | €2.53 | €2.13 | €1.97 | €0.49 |
| 9 Oct 2026 | €0.23 | €0.23 | €0.25 | €0.20 | €0.02 | €2.74 | €2.53 | €2.13 | €1.97 | €0.49 |
| 10 Oct 2026 | €0.23 | €0.21 | €0.25 | €0.20 | €0.02 | €2.74 | €2.53 | €2.13 | €1.97 | €0.49 |
| 11 Oct 2026 | €0.21 | €0.06 | €0.23 | €0.20 | €0.02 | €2.74 | €2.53 | €2.13 | €1.97 | €0.49 |
| 12 Oct 2026 | €0.21 | €0.06 | €0.23 | €0.20 | €0.02 | €2.74 | €2.53 | €2.13 | €1.97 | €0.49 |
| 14 Oct 2026 | €0.23 | €0.29 | €0.27 | €0.18 | €0.02 | €2.74 | €2.53 | €2.13 | €1.97 | €0.49 |
| 15 Oct 2026 | €0.24 | €0.29 | €0.27 | €0.18 | €0.02 | €2.74 | €2.53 | €2.13 | €1.97 | €0.49 |
| 16 Oct 2026 | €0.22 | €0.29 | €0.27 | €0.18 | €0.02 | €2.74 | €2.53 | €2.13 | €1.97 | €0.49 |
| 17 Oct 2026 | €0.22 | €0.29 | €0.27 | €0.18 | €0.02 | €2.74 | €2.53 | €2.13 | €1.97 | €0.49 |
| 18 Oct 2026 | €0.22 | €0.10 | €0.16 | €0.19 | €0.02 | €2.74 | €2.53 | €2.13 | €1.97 | €0.49 |
| 19 Oct 2026 | €0.22 | €0.10 | €0.16 | €0.19 | €0.02 | €2.74 | €2.53 | €2.13 | €1.97 | €0.49 |
| 20 Oct 2026 | €0.22 | €0.10 | €0.16 | €0.19 | €0.02 | €2.74 | €2.53 | €2.13 | €1.97 | €0.49 |
| 21 Oct 2026 | €0.20 | €0.06 | €0.15 | €0.19 | €0.02 | €2.74 | €2.53 | €2.13 | €1.97 | €0.49 |
| 22 Oct 2026 | €0.19 | €0.14 | €0.17 | €0.19 | €0.02 | €2.74 | €2.53 | €2.13 | €1.97 | €0.49 |
| 24 Oct 2026 | €0.24 | €0.15 | €0.16 | €0.18 | €0.02 | €2.74 | €2.53 | €2.13 | €1.97 | €0.49 |
Realised sales
More eBay markets
3 marketplacesRealised sales on other eBay marketplaces in local currency – expand a row for details per market.
United StatesUSD5 realised salesUS$0.99≈ €0.88
5 realised sales on eBay United States · 27 Aug 2026 to 6 Sept 2026
- Median
- US$0.99≈ €0.88
- Typical range
- ~US$0.99≈ ~€0.88
- Lowest
- US$0.99≈ €0.88
- Highest
- US$2.49≈ €2.22
Latest sales
- 6 Sept 2026Condition unknownUS$2.49≈ €2.22
- 27 Aug 2026Condition unknownUS$0.99≈ €0.88
- 27 Aug 2026Condition unknownUS$0.99≈ €0.88
- 27 Aug 2026Condition unknownUS$0.99≈ €0.88
- 27 Aug 2026Condition unknownUS$0.99≈ €0.88
As of 3 Oct 2026 · Realised prices, not offers on this platform. USD values come from sales on eBay United States.
United KingdomGBP6 realised sales£1.49≈ €1.78
6 realised sales on eBay United Kingdom · 5 Jul 2026 to 10 Sept 2026
- Median
- £1.49≈ €1.78
- Typical range
- £1.45 – £1.65≈ €1.73 – €1.97
- Lowest
- £1.37≈ €1.64
- Highest
- £5.98≈ €7.14
Latest sales
- 10 Sept 2026Condition unknown£1.70≈ €2.03
- 31 Aug 2026Condition unknown£5.98≈ €7.14
- 20 Aug 2026Condition unknown£1.49≈ €1.78
- 12 Aug 2026Condition unknown£1.37≈ €1.64
- 3 Aug 2026Condition unknown£1.48≈ €1.77
11 ungraded sales across 10 weeks with sales · weekly median of realised prices, not a forecast.
Values as table
| Week of | Sales | Median | ≈ EUR |
|---|---|---|---|
| 27 Apr 2026 | 1 | £1.82 | ≈ €2.17 |
| 4 May 2026 | 1 | £1.46 | ≈ €1.74 |
| 15 Jun 2026 | 2 | £1.33 | ≈ €1.59 |
| 22 Jun 2026 | 1 | £1.33 | ≈ €1.59 |
| 29 Jun 2026 | 1 | £1.44 | ≈ €1.72 |
| 3 Aug 2026 | 1 | £1.48 | ≈ €1.77 |
| 10 Aug 2026 | 1 | £1.37 | ≈ €1.64 |
| 17 Aug 2026 | 1 | £1.49 | ≈ €1.78 |
| 31 Aug 2026 | 1 | £5.98 | ≈ €7.14 |
| 7 Sept 2026 | 1 | £1.70 | ≈ €2.03 |
As of 3 Oct 2026 · Realised prices, not offers on this platform. GBP values come from sales on eBay United Kingdom.
AustraliaAUD1 realised saleA$14.95≈ €9.38
1 realised sale on eBay Australia · 8 Feb 2026 to 8 Feb 2026
- Median
- A$14.95≈ €9.38
- Typical range
- ~A$14.95≈ ~€9.38
- Lowest
- A$14.95≈ €9.38
- Highest
- A$14.95≈ €9.38
Latest sales
- 8 Feb 2026Condition unknownA$14.95≈ €9.38
As of 3 Oct 2026 · Realised prices, not offers on this platform. AUD values come from sales on eBay Australia.
Local-currency values come from sales on the respective eBay marketplace; not offers on this platform. Euro amounts are approximations at the ECB reference rate of 23 Oct 2026 (1 EUR = 1.1193 USD · 1 EUR = 0.8373 GBP · 1 EUR = 1.5939 AUD).
Realised prices, not offers on this platform.
Market data worldwide
Asking price (EUR)
As of 21 Oct 2026- Asking price
- €29.88
- US marketplace
US market (USD)
As of 24 Oct 2026- NormalLowest US$0.05 · Median US$0.74US$0.717 d−2.7 %30 d−5.3 %
- Reverse HolofoilUS$6.997 d0.0 %30 d+0.4 %
Graded sales (eBay, USD)
As of 24 Oct 2026- PSA 101 sale
US$999.95
Avg. sale
- PSA 83 sales
US$36.00
Avg. sale
Show 1 more grade
- PSA 74 sales
US$3.39
Avg. sale
Raw by condition (USD)
eBay
- Near MintAvg. 30 days US$1.90US$2.008 sales
- Lightly PlayedUS$2.1912 sales
- DamagedUS$1.591 sale
US marketplace
- Near MintAvg. 30 days US$0.74US$0.72192 sales
- Lightly PlayedAvg. 30 days US$0.54US$0.54362 sales
- Moderately PlayedAvg. 30 days US$0.41US$0.39233 sales
- Heavily PlayedAvg. 30 days US$0.36US$0.3574 sales
- DamagedAvg. 30 days US$0.49US$0.4754 sales
EU sales (EUR)
As of 24 Oct 2026- Avg. sale
- €0.24
- Avg. 7 days
- €0.16
- Avg. 30 days
- €0.18
- Lowest
- €0.02
Listings by condition
- Near Mint€1.99
- Mint€0.20
Other printings
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![Arcanine [Sharp Fang | Fire Mane]](/media/catalog-media/tcgdex/hgss1-1/0-en-listing.webp)
![Azumarill [Waterfall | Bubblebeam]](/media/catalog-media/tcgdex/hgss1-2/0-en-listing.webp)
![Clefable [Fairy Power | Moon Impact]](/media/catalog-media/tcgdex/hgss1-3/0-en-listing.webp)
![Hitmontop [Triple Kick | Close Combat]](/media/catalog-media/tcgdex/hgss1-5/0-en-listing.webp)
![Jumpluff [Mass Attack | Leaf Guard]](/media/catalog-media/tcgdex/hgss1-6/0-en-listing.webp)
![Ninetales [Roast Reveal | Will-o'-the-wisp]](/media/catalog-media/tcgdex/hgss1-7/0-en-listing.webp)