Professor's Research
| ebay.nl | n=4 | £2.41 | +55% |
| ebay.es | n=30 | £2.40 | +54% |
| ebay.fr | n=6 | £2.34 | +51% |
| ebay.co.uk | n=12 | £1.86 | +20% |
| ebay.de | n=47 | £1.71 | +10% |
| ebay.com | n=81 | £1.56 | — |
How is this value calculated?
Recency-weighted trimmed median of 67 NM sales (RAW; outliers trimmed against the median, newer sales weigh more, dynamic half-life).
| Evidence path | Sales | Age | Value vᵢ | Weight gᵢ |
|---|---|---|---|---|
| eigene rohe NM-Verkäufe | 65 | 12 d | £1.13 | 530.61 |
| eigene LP-Verkäufe ÷ 0.897 | 4 | 3 mo | £2.04 | 2.8 |
| eigene PSA10-Verkäufe ÷ 15.8629 | 3 | 5 mo | £1.83 | 0.21 |
| de roh NM × 1.1328 (Sprach-Faktor aus 74 Karten) | 5 | 19 d | £1.47 | 1.88 |
| fr roh NM × 0.8769 (Sprach-Faktor aus 63 Karten) | 4 | 4 mo | £0.37 | 1.58 |
Measured error for this era×language (backtest): ±16 %
| Evidence path | Sales | Age | Value vᵢ | Weight gᵢ |
|---|---|---|---|---|
| eigene rohe NM-Verkäufe | 5 | 19 d | £1.30 | 40.82 |
| en roh NM × 0.8829 (Sprach-Faktor aus 74 Karten) | 65 | 12 d | £1.00 | 2.22 |
| fr roh NM × 0.7543 (Sprach-Faktor aus 61 Karten) | 4 | 4 mo | £0.32 | 1.68 |
Measured error for this era×language (backtest): ±19 %
| Evidence path | Sales | Age | Value vᵢ | Weight gᵢ |
|---|---|---|---|---|
| eigene rohe NM-Verkäufe | 4 | 4 mo | £0.42 | 32.65 |
| de roh NM × 1.3258 (Sprach-Faktor aus 61 Karten) | 5 | 19 d | £1.72 | 2.2 |
| en roh NM × 1.1404 (Sprach-Faktor aus 63 Karten) | 65 | 12 d | £1.29 | 1.47 |
Measured error for this era×language (backtest): ±25 %
Gate not green — shown only here, never as the price.
| Evidence path | Sales | Age | Value vᵢ | Weight gᵢ |
|---|---|---|---|---|
| en roh NM × 1.2617 (Sprach-Faktor aus 47 Karten) | 65 | 12 d | £1.43 | 5.94 |
| fr roh NM × 1.0903 (Sprach-Faktor aus 41 Karten) | 4 | 4 mo | £0.46 | 1.7 |
| de roh NM × 1.2827 (Sprach-Faktor aus 44 Karten) | 5 | 19 d | £1.67 | 1.17 |
Measured error for this era×language (backtest): ±17 %
No PSA numbers for this print yet — in any language.
Frequently asked questions
Auction or Buy It Now — which gets more for Professor's Research Scarlet & Violet 241/198?
Across 37 auctions the median was £1.11, across 85 fixed-price sales £2.16. Fixed price therefore fetched about 94 % more — for this card patience with a set price is the better route.
What will I get for Professor's Research Scarlet & Violet 241/198 if I want to sell quickly?
Half of all sales fell between £1.42 and £2.57, with a median of £1.75. 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 Scarlet & Violet 241/198 unrealistic?
The cheapest genuine sales were around £0.78. Offers well below £0.47 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 Last Sold determine the market value?
Last Sold 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.