Professor Program Promos · #189
![Professor's Research [Professor Sada] — Professor Program Promos 189 Pokémon card](/_next/image?url=https%3A%2F%2Ftcgplayer-cdn.tcgplayer.com%2Fproduct%2F556953_in_1000x1000.jpg&w=3840&q=75)
Market price: The going rate for an ungraded copy of this exact printing, from actual sales data — TCGplayer for USD, Cardmarket for EUR. Updated daily. · Reverse holo: Everything except the artwork is foil — the reverse of a normal holo. It's a separate printing and prices on its own.
$13.40
Steady · 23dvia TCGplayer, updated Oct 13, 2026
Set rank: Where this card's market price ranks among the priced cards in its set — #1 is the set's most valuable card. in Professor Program Promos
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Our chart tracks TCGplayer's market price and the asking prices of live eBay listings — what sellers want, not what buyers paid. Completed sale prices live on eBay itself: see recent sold listings for this card →
Right now Professor's Research [Professor Sada] trades at $13.40 for the Reverse Holofoil printing (TCGplayer market price).
That makes it the 39th most valuable of Professor Program Promos's 54 priced cards. The set's top card is Rosa's Encouragement - 084/088 [Top 8] at $1,850. We've logged its price daily since Sep 19, 2026: $13.58 then, $13.40 now (down 1.3%). Its 24-day range runs from $13.40 up to $13.74.
About $13.40 for an ungraded copy. That's the TCGplayer market price for the Reverse Holofoil printing, updated Oct 13, 2026. Graded copies in great shape usually sell for more. What grading means →
23-day trend: steady. Professor's Research [Professor Sada] has held around $13.40 (TCGplayer market price). Prices wiggle a little every day — the chart on this page shows the whole line.
eBay is the easiest place — this page links straight to the live listings for Professor's Research [Professor Sada] (Professor Program Promos #189). Check the photos and the seller's rating first. That's the rule.
Cards trading near $13.40 today.
