Professor's Research
| ebay.nl | n=4 | $3.22 | +55% |
| ebay.es | n=30 | $3.21 | +54% |
| ebay.fr | n=6 | $3.13 | +51% |
| ebay.co.uk | n=12 | $2.49 | +20% |
| ebay.de | n=47 | $2.28 | +10% |
| ebay.com | n=79 | $2.08 | — |
How is this value calculated?
Recency-weighted trimmed median of 65 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 | 9 d | $1.51 | 530.61 |
| eigene LP-Verkäufe ÷ 0.8772 | 4 | 3 mo | $2.80 | 2.79 |
| eigene PSA10-Verkäufe ÷ 15.825 | 3 | 5 mo | $2.45 | 0.22 |
| de roh NM × 1.1299 (Sprach-Faktor aus 74 Karten) | 5 | 16 d | $1.96 | 1.88 |
| fr roh NM × 0.8769 (Sprach-Faktor aus 63 Karten) | 4 | 4 mo | $0.49 | 1.54 |
Measured error for this era×language (backtest): ±16 %
| Evidence path | Sales | Age | Value vᵢ | Weight gᵢ |
|---|---|---|---|---|
| eigene rohe NM-Verkäufe | 5 | 16 d | $1.73 | 40.82 |
| en roh NM × 0.8851 (Sprach-Faktor aus 74 Karten) | 65 | 9 d | $1.34 | 2.27 |
| fr roh NM × 0.757 (Sprach-Faktor aus 61 Karten) | 4 | 4 mo | $0.43 | 1.65 |
Measured error for this era×language (backtest): ±19 %
| Evidence path | Sales | Age | Value vᵢ | Weight gᵢ |
|---|---|---|---|---|
| eigene rohe NM-Verkäufe | 4 | 4 mo | $0.56 | 32.65 |
| de roh NM × 1.3211 (Sprach-Faktor aus 61 Karten) | 5 | 16 d | $2.29 | 2.15 |
| en roh NM × 1.1404 (Sprach-Faktor aus 63 Karten) | 65 | 9 d | $1.72 | 1.45 |
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 × 1.2267 (Sprach-Faktor aus 47 Karten) | 65 | 9 d | $1.86 | 4.7 |
| fr roh NM × 1.0629 (Sprach-Faktor aus 41 Karten) | 4 | 4 mo | $0.59 | 1.92 |
| de roh NM × 1.3568 (Sprach-Faktor aus 44 Karten) | 5 | 16 d | $2.35 | 1.23 |
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 35 auctions the median was $1.32, across 85 fixed-price sales $2.89. Fixed price therefore fetched about 119 % 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 $1.89 and $3.46, with a median of $2.34. 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 $1.04. Offers well below $0.62 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.