Professor's Research

Pokémon GO · 084/78 ·Secret Rare

Illustration: Yusuke Kozaki →

Market price

$8.82

based on 54 sales

Price history · RAW

2026-04-01 · $4.55 $33.42 · 2026-09-20

Cross-market · RAW median per marketplace

Spread vs. cheapest market — before shipping/duty/fees

ebay.fr	n=3	$33.42	+283%
ebay.de	n=18	$15.71	+80%
ebay.co.uk	n=33	$14.70	+69%
ebay.nl	n=6	$11.52	+32%
ebay.es	n=16	$11.30	+30%
ebay.com	n=59	$8.72	—

Price per print

🇫🇷 Secret Rare · FR n=3 $33.35

🇩🇪 Secret Rare · DE n=7 $13.11

🇬🇧 Secret Rare · EN n=114 $8.82

How is this value calculated?

Direct market value · $8.82

Recency-weighted trimmed median of 54 NM sales (RAW; outliers trimmed against the median, newer sales weigh more, dynamic half-life).

Ladder estimate · English · ~$8.82 gruen

Evidence path	Sales	Age	Value vᵢ	Weight gᵢ
eigene rohe NM-Verkäufe	54	2 mo	$8.74	440.82
eigene LP-Verkäufe ÷ 0.9512	5	2 mo	$16.46	6.53
eigene PSA10-Verkäufe ÷ 8.4276	2	4 mo	$4.19	0.31
de roh NM × 0.8074 (Sprach-Faktor aus 46 Karten)	6	20 d	$10.65	2.05

value = exp( Σ gᵢ·ln vᵢ ⁄ Σ gᵢ ) = $8.82 · Σ g = 449.71

Measured error for this era×language (backtest): ±17 %

Ladder estimate · Deutsch · ~$13.11 gruen

Evidence path	Sales	Age	Value vᵢ	Weight gᵢ
eigene rohe NM-Verkäufe	6	20 d	$13.19	48.98
en roh NM × 1.2386 (Sprach-Faktor aus 46 Karten)	54	2 mo	$10.82	1.53

value = exp( Σ gᵢ·ln vᵢ ⁄ Σ gᵢ ) = $13.11 · Σ g = 50.51

Measured error for this era×language (backtest): ±22 %

Ladder estimate · Français · ~$11.84 gelb

Evidence path	Sales	Age	Value vᵢ	Weight gᵢ
en roh NM × 1.283 (Sprach-Faktor aus 26 Karten)	54	2 mo	$11.21	4.44
de roh NM × 0.9959 (Sprach-Faktor aus 23 Karten)	6	20 d	$13.13	2.34

value = exp( Σ gᵢ·ln vᵢ ⁄ Σ gᵢ ) = $11.84 · Σ g = 6.78

Measured error for this era×language (backtest): ±20 %

Gate not green — shown only here, never as the price.

Ladder estimate · Italiano · ~$11.20 gruen

Evidence path	Sales	Age	Value vᵢ	Weight gᵢ
en roh NM × 1.1952 (Sprach-Faktor aus 25 Karten)	54	2 mo	$10.44	3.39
de roh NM × 0.9221 (Sprach-Faktor aus 22 Karten)	6	20 d	$12.16	2.86

value = exp( Σ gᵢ·ln vᵢ ⁄ Σ gᵢ ) = $11.20 · Σ g = 6.25

Measured error for this era×language (backtest): ±18 %

PSA Population

No PSA numbers for this print yet — in any language.

Recent sales · 138

2026-09-20	DE	RAW NM	Forschung des Professors - Pokémon GO - PGO 84/78 (Pokémon T · eBay	$19.55
2026-09-16	DE	RAW NM	Pokémon TCG Pokémon GO Forschung des Professors 084/078 Trai · eBay	$12.40
2026-08-24	EN	RAW UNKNOWN	Professor's Research [Professor Willow] (Secret) 084/078 Pok · eBay	$7.19
2026-08-22	EN	RAW UNKNOWN	Professor's Research [Professor Willow] (Secret) 084/078 Pok · eBay	$7.65
2026-08-22	EN	RAW UNKNOWN	Professor's Research [Professor Willow] (Secret) 084/078 Pok · eBay	$8.13
2026-08-15	EN	RAW UNKNOWN	Professor's Research [Professor Willow] (Secret) 084/078 Pok · eBay	$7.24
2026-08-11	EN	RAW NM	Professor's Research (Secret) Holo Secret Rare Pokemon GO 08 · eBay	$8.72
2026-08-10	EN	RAW NM	Professor's Research (Secret) Secret Rare Pokemon GO 084/078 · eBay	$7.25
2026-08-07	EN	RAW UNKNOWN	Professor's Research [Professor Willow] (Secret) 084/078 Pok · eBay	$8.72
2026-08-03	EN	RAW NM	Professor's Research 084/078 Secret Rare Pokemon GO Pokemon · eBay	$6.78
2026-08-03	EN	RAW NM	Professor's Research 084/078 Holo Rainbow Rare Pokemon GO Po · eBay	$15.61
2026-08-01	EN	RAW NM	Professor's Research (Secret) Secret Rare Pokemon GO 084/078 · eBay	$8.30
2026-07-30	EN	RAW NM	Professor's Research (Secret) 084/078 Pokemon GO - Pokemon C · eBay	$23.74
2026-07-28	EN	RAW NM	Professor's Research (Secret) Secret Rare Pokemon GO PGO Sup · eBay	$9.85
2026-07-27	DE	RAW NM	Forschung des Professors Trainer-Unterstützer Holo Full Art · eBay	$8.94
2026-07-26	EN	RAW NM	Pokemon Professor's Research Rainbow 084/078 Pokémon Go NM · eBay	$8.32
2026-07-24	EN	RAW NM	Professor's Research 084/078 Rainbow Rare Pokemon GO Pokemon · eBay	$6.24
2026-07-21	EN	RAW LP	Professor’s Research 084/078 Rainbow Rare Pokemon Go - Pokem · eBay	$20.41
2026-07-20	EN	RAW NM	2022 Pokémon GO Professor’s Research (Professor Willow) Full · eBay	$29.35
2026-07-19	EN	RAW NM	Pokemon Professor's Research [Professor Willow] (Secret) Pok · eBay	$8.79

Frequently asked questions

Auction or Buy It Now — which gets more for Professor's Research Pokémon GO 084/78?

Across 18 auctions the median was $7.57, across 89 fixed-price sales $13.12. Fixed price therefore fetched about 73 % more — for this card patience with a set price is the better route.

What will I get for Professor's Research Pokémon GO 084/78 if I want to sell quickly?

Half of all sales fell between $8.30 and $15.58, with a median of $10.75. Selling fast lands you nearer the lower end; with patience, good photos and a complete title the upper end is achievable.

Below which price is an offer for Professor's Research Pokémon GO 084/78 unrealistic?

The cheapest genuine sales were around $6.78. Offers well below $4.07 are typically fakes, mislabelled cards or a different variant — ask for photos of all four borders and a close-up of the surface.

How does lastsold determine the market value?

lastsold uses only real sales — eBay plus auction houses like Goldin & Fanatics — recent sales count more (recency weighting), outliers and fakes are removed. It's not an estimate but actual sold prices, separated by condition, language and grading.