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

Professor Program Promos • Promo • Reverse Holofoil

No sales in the last 7 days

$13.74as of Oct 11, 2026↑ $0.00 (+0.0%) this week

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Selling it? At market it nets about $11.60 on TCGplayer or $11.39 on eBay after fees. Where to sell and the fee calculator →

Sales & Velocity

As of 2026-10-10

Thin market: fewer than 5 sales in the last 7 days

Sold (7d / 30d)

0 / 2

NM sold between (7d)

—

Cheapest listing

$9.99

Units sold per day, Sep 2–Sep 30 (Near Mint)

Units sold per day, Near Mint
Date	Units sold	Sold between
Sep 2	1	$11.42–$11.42
Sep 24	1	$14.99–$14.99
Sep 30	1	$13.74–$13.74

Condition	Sold 7d	Sold 30d
Near Mint	0	2
Lightly Played	0	0
Heavily Played	0	0

Sales data: TCGplayer

Quick answers

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

As of October 11, 2026, Professor's Research [Professor Sada] - 189/198 from Professor Program Promos has a TCGplayer market price of $13.74.

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

Its TCGplayer market price is up 1.2% over the past 30 days and flat over the past week, as of October 11, 2026.

Price Snapshot

Market

$13.74

Low

$9.99

Mid

$14.26

High

$17.66

7-Day:$0.00 (+0.0%)

30-Day:+$0.16 (+1.2%)

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%	$6.87	Cash buylist, low end
60%	$8.24	Cash buylist, typical
70%	$9.62	Buylist top end, store credit
80%	$10.99	Bulk lot or quick sale
90%	$12.37	Quick sale, just under market
100%	$13.74	Market price
110%	$15.11	Asking price, room to negotiate
120%	$16.49	Asking price, room to negotiate
150%	$20.61	Presale and hype pricing

Your price (USD)

$

Type what you are being asked to pay, or what you plan to list at.

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

TCGPlayerRaw$13.74Raw copies, condition graded by the marketplace

Buy Now

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Raw listings

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