Professor's Research
| ebay.es | n=10 | $2.23 | +112% |
| ebay.de | n=6 | $1.76 | +68% |
| ebay.com | n=25 | $1.05 | — |
How is this value calculated?
Recency-weighted trimmed median of 15 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 · Set -13% nachgeführt | 12 | 2 mo | $0.96 | 97.96 |
Measured error for this era×language (backtest): ±16 %
| Evidence path | Sales | Age | Value vᵢ | Weight gᵢ |
|---|---|---|---|---|
| en roh NM × 0.8611 (Sprach-Faktor aus 73 Karten) | 12 | 2 mo | $0.90 | 3.56 |
Measured error for this era×language (backtest): ±19 %
| Evidence path | Sales | Age | Value vᵢ | Weight gᵢ |
|---|---|---|---|---|
| en roh NM × 1.1391 (Sprach-Faktor aus 53 Karten) · Set +20% nachgeführt | 12 | 2 mo | $1.34 | 1.32 |
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 × 1.1802 (Sprach-Faktor aus 47 Karten) · Set -10% nachgeführt | 12 | 2 mo | $1.15 | 3.37 |
Measured error for this era×language (backtest): ±17 %
No PSA numbers for this print yet — in any language.
#110 · UR
#084 · SEC
#201 · UR
#209 · SEC
#SWSH152
#98 · U
#62 · RH
#150 · UR
#078 · UR
#240 · UR
#24 · URFrequently asked questions
What will I get for Professor's Research Scarlet & Violet 190/198 if I want to sell quickly?
Half of all sales fell between $1.04 and $2.11, with a median of $1.57. 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 190/198 unrealistic?
The cheapest genuine sales were around $0.70. Offers well below $0.42 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.