Professor's Research

Pokémon GO · 084/78 ·Secret Rare

Illustration: Yusuke Kozaki →

Market price

£6.68

based on 54 sales

Price history · RAW

2026-04-01 · £3.45 £25.31 · 2026-09-20

Cross-market · RAW median per marketplace

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

ebay.fr	n=3	£25.31	+283%
ebay.de	n=18	£11.90	+80%
ebay.co.uk	n=33	£11.13	+69%
ebay.nl	n=6	£8.73	+32%
ebay.es	n=16	£8.56	+30%
ebay.com	n=59	£6.60	—

Price per print

🇫🇷 Secret Rare · FR n=3 £25.26

🇩🇪 Secret Rare · DE n=7 £9.93

🇬🇧 Secret Rare · EN n=114 £6.68

How is this value calculated?

Direct market value · £6.68

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

Ladder estimate · English · ~£6.68 gruen

Evidence path	Sales	Age	Value vᵢ	Weight gᵢ
eigene rohe NM-Verkäufe	54	2 mo	£6.62	440.82
eigene LP-Verkäufe ÷ 0.9512	5	2 mo	£12.47	6.53
eigene PSA10-Verkäufe ÷ 8.4276	2	4 mo	£3.17	0.31
de roh NM × 0.8074 (Sprach-Faktor aus 46 Karten)	6	20 d	£8.07	2.05

value = exp( Σ gᵢ·ln vᵢ ⁄ Σ gᵢ ) = £6.68 · Σ g = 449.71

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

Ladder estimate · Deutsch · ~£9.93 gruen

Evidence path	Sales	Age	Value vᵢ	Weight gᵢ
eigene rohe NM-Verkäufe	6	20 d	£9.99	48.98
en roh NM × 1.2386 (Sprach-Faktor aus 46 Karten)	54	2 mo	£8.19	1.53

value = exp( Σ gᵢ·ln vᵢ ⁄ Σ gᵢ ) = £9.93 · Σ g = 50.51

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

Ladder estimate · Français · ~£8.96 gelb

Evidence path	Sales	Age	Value vᵢ	Weight gᵢ
en roh NM × 1.283 (Sprach-Faktor aus 26 Karten)	54	2 mo	£8.49	4.44
de roh NM × 0.9959 (Sprach-Faktor aus 23 Karten)	6	20 d	£9.95	2.34

value = exp( Σ gᵢ·ln vᵢ ⁄ Σ gᵢ ) = £8.96 · 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 · ~£8.48 gruen

Evidence path	Sales	Age	Value vᵢ	Weight gᵢ
en roh NM × 1.1952 (Sprach-Faktor aus 25 Karten)	54	2 mo	£7.91	3.39
de roh NM × 0.9221 (Sprach-Faktor aus 22 Karten)	6	20 d	£9.21	2.86

value = exp( Σ gᵢ·ln vᵢ ⁄ Σ gᵢ ) = £8.48 · 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	£14.80
2026-09-16	DE	RAW NM	Pokémon TCG Pokémon GO Forschung des Professors 084/078 Trai · eBay	£9.39
2026-08-24	EN	RAW UNKNOWN	Professor's Research [Professor Willow] (Secret) 084/078 Pok · eBay	£5.44
2026-08-22	EN	RAW UNKNOWN	Professor's Research [Professor Willow] (Secret) 084/078 Pok · eBay	£5.79
2026-08-22	EN	RAW UNKNOWN	Professor's Research [Professor Willow] (Secret) 084/078 Pok · eBay	£6.15
2026-08-15	EN	RAW UNKNOWN	Professor's Research [Professor Willow] (Secret) 084/078 Pok · eBay	£5.48
2026-08-11	EN	RAW NM	Professor's Research (Secret) Holo Secret Rare Pokemon GO 08 · eBay	£6.60
2026-08-10	EN	RAW NM	Professor's Research (Secret) Secret Rare Pokemon GO 084/078 · eBay	£5.49
2026-08-07	EN	RAW UNKNOWN	Professor's Research [Professor Willow] (Secret) 084/078 Pok · eBay	£6.60
2026-08-03	EN	RAW NM	Professor's Research 084/078 Secret Rare Pokemon GO Pokemon · eBay	£5.14
2026-08-03	EN	RAW NM	Professor's Research 084/078 Holo Rainbow Rare Pokemon GO Po · eBay	£11.82
2026-08-01	EN	RAW NM	Professor's Research (Secret) Secret Rare Pokemon GO 084/078 · eBay	£6.29
2026-07-30	EN	RAW NM	Professor's Research (Secret) 084/078 Pokemon GO - Pokemon C · eBay	£17.98
2026-07-28	EN	RAW NM	Professor's Research (Secret) Secret Rare Pokemon GO PGO Sup · eBay	£7.46
2026-07-27	DE	RAW NM	Forschung des Professors Trainer-Unterstützer Holo Full Art · eBay	£6.77
2026-07-26	EN	RAW NM	Pokemon Professor's Research Rainbow 084/078 Pokémon Go NM · eBay	£6.30
2026-07-24	EN	RAW NM	Professor's Research 084/078 Rainbow Rare Pokemon GO Pokemon · eBay	£4.72
2026-07-21	EN	RAW LP	Professor’s Research 084/078 Rainbow Rare Pokemon Go - Pokem · eBay	£15.46
2026-07-20	EN	RAW NM	2022 Pokémon GO Professor’s Research (Professor Willow) Full · eBay	£22.23
2026-07-19	EN	RAW NM	Pokemon Professor's Research [Professor Willow] (Secret) Pok · eBay	£6.65

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 £5.73, across 89 fixed-price sales £9.94. 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 £6.29 and £11.80, with a median of £8.14. 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 £5.14. Offers well below £3.08 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.