Professor's Research [Professor Sada] - 189/198 Reverse Holo

SV01: Scarlet & Violet Base Set • Rare • Reverse Holofoil

All 11 printings from $0.13 →

Sold $0.10–$0.49 this week

12 NM sales this week · 33 in 30 days

TCGplayer market $0.29as of Oct 31, 2026↑ +$0.02 (+7.4%) this week

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Sales & Velocity

As of 2026-10-31

Listings are below the recent sold range

Sold (7d / 30d)

14 / 37

NM sold between (7d)

$0.10–$0.49

Cheapest listing

$0.01

Units sold per day, Sep 9–Oct 30 (Near Mint)

Units sold per day, Near Mint
Date	Units sold	Sold between
Sep 9	1	$0.99–$0.99
Sep 10	2	$0.16–$0.36
Sep 13	2	$0.36–$0.41
Sep 14	1	$0.40–$0.40
Sep 15	1	$0.35–$0.35
Sep 17	3	$0.19–$0.22
Sep 23	1	$0.09–$0.09
Sep 24	1	$0.40–$0.40
Sep 28	1	$0.40–$0.40
Oct 3	1	$0.40–$0.40
Oct 4	3	$0.25–$0.35
Oct 5	1	$0.40–$0.40
Oct 8	2	$0.37–$0.40
Oct 9	1	$0.25–$0.25
Oct 10	1	$0.19–$0.19
Oct 11	2	$0.20–$0.37
Oct 16	1	$0.22–$0.22
Oct 17	1	$0.40–$0.40
Oct 18	1	$0.20–$0.20
Oct 19	1	$0.30–$0.30
Oct 20	1	$0.40–$0.40
Oct 21	1	$0.28–$0.28
Oct 22	2	$0.10–$0.16
Oct 24	2	$0.28–$0.28
Oct 25	2	$0.27–$0.28
Oct 26	1	$0.10–$0.10
Oct 27	2	$0.40–$0.40
Oct 28	2	$0.30–$0.40
Oct 29	4	$0.10–$0.49
Oct 30	1	$0.28–$0.28

Condition	Sold 7d	Sold 30d
Lightly Played	2	4
Near Mint	12	33
Damaged	0	0
Moderately Played	0	0

Sales data: TCGplayer

Quick answers

How much is Professor's Research [Professor Sada] - 189/198 worth?

As of October 31, 2026, Professor's Research [Professor Sada] - 189/198 from SV01: Scarlet & Violet Base Set has a TCGplayer market price of $0.29. 12 Near Mint copies sold on TCGplayer this week at $0.10 to $0.49.

Is Professor's Research [Professor Sada] - 189/198 going up or down in price?

Its TCGplayer market price is down 19.4% over the past 30 days and up 7.4% over the past week, as of October 31, 2026.

How can I track the price of Professor's Research [Professor Sada] - 189/198?

Set a free price alert on this page: enter your email and a target price, and The Lab TCG emails you when the TCGplayer market price falls to it. Prices are checked every night, and no account is needed.

Price Snapshot

Market

$0.29

Low

$0.01

Mid

$0.30

High

$15.00

7-Day:+$0.02 (+7.4%)

30-Day:-$0.07 (-19.4%)

Percent of Market

Buying? See what a price is as a share of market. Selling? Start at market and read down to a buylist offer or up to an asking price.

% of Market price	Price	Usually means
50%	$0.15	Cash buylist, low end
60%	$0.17	Cash buylist, typical
70%	$0.20	Buylist top end, store credit
80%	$0.23	Bulk lot or quick sale
90%	$0.26	Quick sale, just under market
100%	$0.29	Market price
110%	$0.32	Asking price, room to negotiate
120%	$0.35	Asking price, room to negotiate
150%	$0.44	Presale and hype pricing

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Market price is the TCGplayer market price. TCGplayer Low is the lowest listed near-mint price at the last snapshot. Definitions

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Where to Buy

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