Professor's Research

Pokémon GO · 084/78 ·Secret Rare

Illustration: Yusuke Kozaki →

Market price

£8.29

based on 54 sales

Price history · RAW

2026-04-01 · £1.70 £25.34 · 2026-10-04

Cross-market · RAW median per marketplace

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

ebay.fr	n=3	£25.34	+283%
ebay.de	n=18	£11.64	+76%
ebay.co.uk	n=33	£11.15	+69%
ebay.nl	n=6	£8.74	+32%
ebay.es	n=16	£8.57	+30%
ebay.com	n=59	£6.61	—

Price per print

🇫🇷 Secret Rare · FR n=3 £25.34

🇬🇧 Secret Rare · EN n=114 £8.29

🇩🇪 Secret Rare · DE n=7 £5.23

How is this value calculated?

Direct market value · £8.29

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

Ladder estimate · English · ~£8.29 gruen

Evidence path	Sales	Age	Value vᵢ	Weight gᵢ
eigene rohe NM-Verkäufe	55	2 mo	£8.27	448.98
eigene LP-Verkäufe ÷ 0.9406	5	3 mo	£11.92	7.75
eigene PSA10-Verkäufe ÷ 7.0246	2	4 mo	£3.81	0.24
de roh NM × 0.9599 (Sprach-Faktor aus 46 Karten)	6	19 d	£4.87	2.85

value = exp( Σ gᵢ·ln vᵢ ⁄ Σ gᵢ ) = £8.29 · Σ g = 459.82

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

Ladder estimate · Deutsch · ~£5.23 gruen

Evidence path	Sales	Age	Value vᵢ	Weight gᵢ
eigene rohe NM-Verkäufe	6	19 d	£5.08	48.98
en roh NM × 1.0424 (Sprach-Faktor aus 46 Karten)	55	2 mo	£8.62	2.85

value = exp( Σ gᵢ·ln vᵢ ⁄ Σ gᵢ ) = £5.23 · Σ g = 51.83

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

Ladder estimate · Français · ~£8.04 gelb

Evidence path	Sales	Age	Value vᵢ	Weight gᵢ
en roh NM × 1.3317 (Sprach-Faktor aus 29 Karten)	55	2 mo	£11.01	3.19
de roh NM × 1.127 (Sprach-Faktor aus 26 Karten)	6	19 d	£5.72	2.94

value = exp( Σ gᵢ·ln vᵢ ⁄ Σ gᵢ ) = £8.04 · Σ g = 6.13

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

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

Ladder estimate · Italiano · ~£9.21 gruen

Evidence path	Sales	Age	Value vᵢ	Weight gᵢ
en roh NM × 1.2965 (Sprach-Faktor aus 26 Karten)	55	2 mo	£10.72	5.37
de roh NM × 1.0757 (Sprach-Faktor aus 22 Karten)	6	19 d	£5.46	1.57

value = exp( Σ gᵢ·ln vᵢ ⁄ Σ gᵢ ) = £9.21 · Σ g = 6.94

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

PSA Population

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

Recent sales · 138

2026-10-04	DE	RAW NM	Pokémon Forschung des Professors 084/078 Pokémon GO Rainbow · eBay	£1.70
2026-09-16	DE	RAW NM	Pokémon TCG Pokémon GO Forschung des Professors 084/078 Trai · eBay	£9.40
2026-08-24	EN	RAW UNKNOWN	Professor's Research [Professor Willow] (Secret) 084/078 Pok · eBay	£5.45
2026-08-22	EN	RAW UNKNOWN	Professor's Research [Professor Willow] (Secret) 084/078 Pok · eBay	£6.16
2026-08-22	EN	RAW UNKNOWN	Professor's Research [Professor Willow] (Secret) 084/078 Pok · eBay	£5.80
2026-08-15	EN	RAW UNKNOWN	Professor's Research [Professor Willow] (Secret) 084/078 Pok · eBay	£5.49
2026-08-11	EN	RAW NM	Professor's Research (Secret) Holo Secret Rare Pokemon GO 08 · eBay	£6.61
2026-08-10	EN	RAW NM	Professor's Research (Secret) Secret Rare Pokemon GO 084/078 · eBay	£5.50
2026-08-07	EN	RAW UNKNOWN	Professor's Research [Professor Willow] (Secret) 084/078 Pok · eBay	£6.61
2026-08-03	EN	RAW NM	Professor's Research 084/078 Secret Rare Pokemon GO Pokemon · eBay	£5.15
2026-08-03	EN	RAW NM	Professor's Research 084/078 Holo Rainbow Rare Pokemon GO Po · eBay	£11.84
2026-08-01	EN	RAW NM	Professor's Research (Secret) Secret Rare Pokemon GO 084/078 · eBay	£6.30
2026-07-30	EN	RAW NM	Professor's Research (Secret) 084/078 Pokemon GO - Pokemon C · eBay	£18.00
2026-07-28	EN	RAW NM	Professor's Research (Secret) Secret Rare Pokemon GO PGO Sup · eBay	£7.47
2026-07-27	DE	RAW NM	Forschung des Professors Trainer-Unterstützer Holo Full Art · eBay	£6.78
2026-07-26	EN	RAW NM	Pokemon Professor's Research Rainbow 084/078 Pokémon Go NM · eBay	£6.31
2026-07-24	EN	RAW NM	Professor's Research 084/078 Rainbow Rare Pokemon GO Pokemon · eBay	£4.73
2026-07-21	EN	RAW LP	Professor’s Research 084/078 Rainbow Rare Pokemon Go - Pokem · eBay	£15.48
2026-07-20	EN	RAW NM	2022 Pokémon GO Professor’s Research (Professor Willow) Full · eBay	£22.26
2026-07-19	EN	RAW NM	Pokemon Professor's Research [Professor Willow] (Secret) Pok · eBay	£6.66

Frequently asked questions

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

Across 19 auctions the median was £5.74, across 88 fixed-price sales £9.95. 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 £6.28 and £11.78, with a median of £7.98. 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 £5.09. Offers well below £3.06 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.