Trading Cards > Pokemon Cards > Pokemon HeartGold & SoulSilver

Professor Oak's New Theory #101 Pokemon HeartGold & SoulSilver

Grade Your Cards..

PSA $25 Off Code: PC25 Code: PC25

CGC

- In One Click
- With Details
+ Collection
+ Wishlist
Buy/Sell
Item Details
Show Historic Prices

Add this item to your collection.
Keep track of your collection value over time. Ok

Compare vs Other Items

Ungraded	Grade 7	Grade 8	Grade 9	Grade 9.5	PSA 10
$1.00 -$0.21	$3.39 $0.00	-	$17.33 +$1.34	$19.00 +$1.00	$48.46 +$3.37	+
volume: 1 sale per week	volume: 1 sale per year	volume: rare	volume: rare	volume: rare	volume: rare	+

Grade 9	Grade 9.5	PSA 10
$17.33 +$1.34	$19.00 +$1.00	$48.46 +$3.37
volume: rare	volume: rare	volume: rare

Compare Prices

Ungraded Sold Listings (52)

Grade 7 Sold Listings (1)

Grade 8 Sold Listings (0)

Grade 9 Sold Listings (0)

PSA 10 Sold Listings (0)

All Sold Listings

POP Report

Loose Price	Add typical shipping costs
eBay	$0.50
TCGPlayer	$0.90
PriceCharting

We earn a commission if you click links and buy stuff.

Sale Date ▲ ▼	TW	Title ▲ ▼	▲ ▼ Price
2026-06-20	Time Warp shows photos of completed sales. >Subscribe ($6/month) to see photos. OK	Professor Oak's New Theory HeartGold SoulSilver Uncommon 101/123 2010 Pokemon TC 101/123 [eBay]	$2.99	Report It
2026-06-20	Time Warp shows photos of completed sales. >Subscribe ($6/month) to see photos. OK	PROFESSOR OAK'S NEW THEORY - 101/123 - HeartGold SoulSilver HGSS - Pokemon - PL 109/132 [eBay]	$1.50	Report It
2026-06-17	Time Warp shows photos of completed sales. >Subscribe ($6/month) to see photos. OK	Pokemon Professor Oak’s New Theory 101/123 Heartgold & Soulsilver MP+ 101/123 [eBay]	$1.90	Report It
2026-06-17	Time Warp shows photos of completed sales. >Subscribe ($6/month) to see photos. OK	Pokemon Card HeartGold & SoulSilver Professor Oak's New Theory 101/123 Uncommon 101/123 [eBay]	$1.49	Report It
2026-06-17	Time Warp shows photos of completed sales. >Subscribe ($6/month) to see photos. OK	Professor Oak's New Theory 101/123 Uncommon HeartGold & SoulSilver Pokemon MP 101/123 [eBay]	$0.99	Report It
2026-06-15		Professor Oak's New Theory #101 Near Mint English [TCGPlayer]	$0.98
2026-06-13		Professor Oak's New Theory #101 Near Mint English [TCGPlayer]	$0.88
2026-06-12	Time Warp shows photos of completed sales. >Subscribe ($6/month) to see photos. OK	Professor Oak's New Theory 101/123 Uncommon HeartGold & SoulSilver Pokemon MP 101/123 [eBay]	$1.79	Report It
2026-06-12	Time Warp shows photos of completed sales. >Subscribe ($6/month) to see photos. OK	Professor Oak's New Theory 101/123 Uncommon HeartGold & SoulSilver Pokemon MP 101/123 [eBay]	$0.99	Report It
2026-06-12	Time Warp shows photos of completed sales. >Subscribe ($6/month) to see photos. OK	Professor Oak's New Theory 101/123 Uncommon HeartGold & SoulSilver Pokemon DMG 101/123 [eBay]	$1.59	Report It
2026-06-03		Professor Oak's New Theory #101 Near Mint English [TCGPlayer]	$0.90
2026-06-01		Professor Oak's New Theory #101 Near Mint English [TCGPlayer]	$0.88
2026-05-30	Time Warp shows photos of completed sales. >Subscribe ($6/month) to see photos. OK	Pokemon TCG HeartGold SoulSilver Professor Oak's New Theory 101/123 EX [eBay]	$1.45	Report It
2026-05-28		Professor Oak's New Theory #101 Near Mint English [TCGPlayer]	$0.74
2026-05-18	Time Warp shows photos of completed sales. >Subscribe ($6/month) to see photos. OK	Pokemon TCG HeartGold SoulSilver Professor Oak's New Theory 101/123 LP [eBay]	$1.00	Report It
2026-05-10	Time Warp shows photos of completed sales. >Subscribe ($6/month) to see photos. OK	Pokémon TCG Professor Oak's New Theory Heartgold Soulsilver 101/123 MP/HP [eBay]	$1.67	Report It
2026-04-27	Time Warp shows photos of completed sales. >Subscribe ($6/month) to see photos. OK	Professor Oak's New Theory–Pokémon TCG HeartGold SoulSilver 101/123 Uncommon MP 101/123 [eBay]	$1.49	Report It
2026-04-21		Professor Oak's New Theory #101 Near Mint English [TCGPlayer]	$0.65
2026-04-18	Time Warp shows photos of completed sales. >Subscribe ($6/month) to see photos. OK	Professor Oak's New Theory 101/123 Uncommon HeartGold & SoulSilver Base Pokemon 101/123 [eBay]	$1.60	Report It
2026-04-14		Professor Oak's New Theory #101 Near Mint English [TCGPlayer]	$0.97
2026-04-10		Professor Oak's New Theory #101 Near Mint English [TCGPlayer]	$0.65
2026-04-06		Professor Oak's New Theory #101 Near Mint English [TCGPlayer]	$0.89
2026-03-31	Time Warp shows photos of completed sales. >Subscribe ($6/month) to see photos. OK	PROFESSOR OAK'S NEW THEORY - 101/123 - HeartGold SoulSilver HGSS - Pokemon Card 109/132 [eBay]	$0.99	Report It
2026-03-21		Professor Oak's New Theory #101 Near Mint English [TCGPlayer]	$1.97
2026-03-10	Time Warp shows photos of completed sales. >Subscribe ($6/month) to see photos. OK	Professor Oak's New Theory 101/123 Uncommon HeartGold & SoulSilver Pokemon MP 101/123 [eBay]	$1.53	Report It
2026-03-02	Time Warp shows photos of completed sales. >Subscribe ($6/month) to see photos. OK	Professor Oak's New Theory 101/123 HeartGold SoulSilver Uncommon Pokemon MP+ 101/123 [eBay]	$1.54	Report It
2026-02-27		Professor Oak's New Theory #101 Near Mint English [TCGPlayer]	$6.92
2026-02-25		Professor Oak's New Theory #101 Near Mint English [TCGPlayer]	$0.97
2026-02-02		Professor Oak's New Theory #101 Near Mint English [TCGPlayer]	$0.97
2026-01-28		Professor Oak's New Theory #101 Near Mint English [TCGPlayer]	$0.80
2026-01-21		Professor Oak's New Theory #101 Near Mint English [TCGPlayer]	$0.79
2026-01-09	Time Warp shows photos of completed sales. >Subscribe ($6/month) to see photos. OK	PROFESSOR OAK'S NEW THEORY - 101/123 - HeartGold SoulSilver HGSS - Pokemon - PL 109/132 [eBay]	$0.99	Report It
2026-01-08		Professor Oak's New Theory #101 Near Mint English [TCGPlayer]	$1.23
2026-01-07	Time Warp shows photos of completed sales. >Subscribe ($6/month) to see photos. OK	Professor Oak's New Theory 101/123 Uncommon Pokemon HeartGold SoulSilver MP 101/123 [eBay]	$1.75	Report It
2026-01-07	Time Warp shows photos of completed sales. >Subscribe ($6/month) to see photos. OK	Professor Oak's New Theory 101/123 Uncommon Pokemon HeartGold SoulSilver MP 101/123 [eBay]	$1.75	Report It
2026-01-07		Professor Oak's New Theory #101 Near Mint English [TCGPlayer]	$0.86
2025-12-30		Professor Oak's New Theory #101 Near Mint English [TCGPlayer]	$0.80
2025-12-20		Professor Oak's New Theory #101 Near Mint English [TCGPlayer]	$0.79
2025-12-19		Professor Oak's New Theory #101 Near Mint English [TCGPlayer]	$0.79
2025-12-18		Professor Oak's New Theory #101 Near Mint English [TCGPlayer]	$0.97
2025-12-16		Professor Oak's New Theory #101 Near Mint English [TCGPlayer]	$0.99
2025-12-13		Professor Oak's New Theory #101 Near Mint English [TCGPlayer]	$0.78
2025-12-02		Professor Oak's New Theory #101 Near Mint English [TCGPlayer]	$0.74
2025-11-18	Time Warp shows photos of completed sales. >Subscribe ($6/month) to see photos. OK	Pokémon TCG Professor Oaks New Theory Heartgold Soulsilver 101/123 Regular MP. [eBay]	$2.29	Report It
2025-11-18	Time Warp shows photos of completed sales. >Subscribe ($6/month) to see photos. OK	Professor Oak's New Theory Uncommon #101/123 HeartGold SoulSilver NM Pokemon 101/123 [eBay]	$1.99	Report It
2025-11-08	Time Warp shows photos of completed sales. >Subscribe ($6/month) to see photos. OK	Pokémon Professor Oak's New Theory 101/123 HS HeartGold & SoulSilver NM [eBay]	$2.30	Report It
2025-10-28		Professor Oak's New Theory #101 Near Mint English [TCGPlayer]	$0.75
2025-08-29	Time Warp shows photos of completed sales. >Subscribe ($6/month) to see photos. OK	Professor Oak's New Theory 101/123, Heartgold & Soulsilver, Pokemon, LP [eBay]	$2.01	Report It
2025-08-27	Time Warp shows photos of completed sales. >Subscribe ($6/month) to see photos. OK	Professor Oak's New Theory 101/123 Uncommon Pokemon HeartGold SoulSilver 101/123 [eBay]	$1.90	Report It
2025-08-19	Time Warp shows photos of completed sales. >Subscribe ($6/month) to see photos. OK	Professor Oak's New Theory 101/123 Uncommon HeartGold & SoulSilver Pokemon LP 101/123 [eBay]	$2.16	Report It
2025-08-17	Time Warp shows photos of completed sales. >Subscribe ($6/month) to see photos. OK	2010 Pokemon HeartGold & SoulSilver Professor Oak's New Theory #101/123 [eBay]	$0.99	Report It
2025-07-21	Time Warp shows photos of completed sales. >Subscribe ($6/month) to see photos. OK	Professor Oak's New Theory Pokemon TCG HeartGold Soulsilver Holo Card #101/123 #101 [eBay]	$2.50	Report It

See an incorrect/misclassified sale? Please click "report" to notify admin.

We earn a commission if you click links and buy stuff.

Sale Date ▲ ▼	TW	Title ▲ ▼	▲ ▼ Price
2026-03-09	Time Warp shows photos of completed sales. >Subscribe ($6/month) to see photos. OK	2010 POKEMON HEARTGOLD & SOULSILVER #101 PROFESSOR OAK'S NEW THEORY PSA 7 #101 [eBay]	$3.39		Report It

See an incorrect/misclassified sale? Please click "report" to notify admin.

No sales data for this card and grade

Any value shown for this card with this grade is an estimate based on sales we've found for other grades and the age of the card.
This estimate is based on the card being PSA or BGS graded. Grades from other companies could be worth much less.

No sales data for this card and grade

Graded Population Report: Professor Oak's New Theory #101

Visualize the distrbution of grades in the chart. Hover or touch points to see the actual population for each grade.

Grade Your Cards &Save $25 Use Code: PC25

* population census updated monthly

Click tabs to see historic sales data.
Click on a listing to see full details. Ok

Professor Oak's New Theory #101 (Pokemon HeartGold & SoulSilver) Details

See:	Population Report
Genre:	Pokemon Card
Release Date:	February 10, 2010
Publisher:	none
Card Number:	#101
Print Run:	n/a
Notes:	none

ePID (eBay):	none
TCGPlayer ID:	88400
PriceCharting ID:	806212

Description:	none

More Photos: Pokemon HeartGold & SoulSilver: Professor Oak's New Theory #101

Main Image

Full Price Guide: Professor Oak's New Theory #101 (Pokemon HeartGold & SoulSilver)

Ungraded	$1.00
Grade 1	-
Grade 2	$2.00
Grade 3	$2.00
Grade 4	$2.00
Grade 5	$2.00
Grade 6	$3.00
Grade 7	$3.39
Grade 8	-
Grade 9	$17.33
Grade 9.5	$19.00
TAG 10	-
ACE 10	-
SGC 10	$29.00
CGC 10	$29.00
PSA 10	$48.46
BGS 10	$63.00
BGS 10 Black	$315.00
CGC 10 Pristine	$52.00

All prices are the current market price.

Professor Oak's New Theory #101 (Pokemon HeartGold & SoulSilver | Pokemon Cards) prices are based on the historic sales. The prices shown are calculated using our proprietary algorithm.
Historic sales data are completed sales with a buyer and a seller agreeing on a price. We do not factor unsold items into our prices.
Chart shows the price of Professor Oak's New Theory #101 at the end of each month going back as long as we have tracked the item.