Professor's Research
| ebay.fr | n=3 | $7.30 | +170% |
| ebay.co.uk | n=10 | $5.19 | +92% |
| ebay.nl | n=12 | $3.51 | +30% |
| ebay.es | n=39 | $3.51 | +30% |
| ebay.de | n=37 | $3.47 | +28% |
| ebay.com | n=88 | $2.71 | — |
How is this value calculated?
Recency-weighted trimmed median of 90 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 | 92 | 2 mo | $2.93 | 751.02 |
| eigene PSA9-Verkäufe ÷ 1.8458 | 2 | 3 mo | $9.62 | 0.9 |
| de roh NM × 0.8551 (Sprach-Faktor aus 113 Karten) | 5 | 2 mo | $4.41 | 3.03 |
Measured error for this era×language (backtest): ±17 %
| Evidence path | Sales | Age | Value vᵢ | Weight gᵢ |
|---|---|---|---|---|
| eigene rohe NM-Verkäufe | 5 | 2 mo | $5.15 | 40.82 |
| en roh NM × 1.1695 (Sprach-Faktor aus 113 Karten) | 92 | 2 mo | $3.42 | 3.6 |
Measured error for this era×language (backtest): ±22 %
| Evidence path | Sales | Age | Value vᵢ | Weight gᵢ |
|---|---|---|---|---|
| de roh NM × 1.2865 (Sprach-Faktor aus 64 Karten) | 5 | 2 mo | $6.63 | 2.45 |
| en roh NM × 1.469 (Sprach-Faktor aus 66 Karten) | 92 | 2 mo | $4.30 | 1.96 |
Measured error for this era×language (backtest): ±20 %
Gate not green — shown only here, never as the price.
| Evidence path | Sales | Age | Value vᵢ | Weight gᵢ |
|---|---|---|---|---|
| en roh NM × 1.0414 (Sprach-Faktor aus 51 Karten) | 92 | 2 mo | $3.05 | 2.82 |
| de roh NM × 0.8983 (Sprach-Faktor aus 51 Karten) | 5 | 2 mo | $4.62 | 2.08 |
Measured error for this era×language (backtest): ±18 %
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 Crown Zenith 150/159?
Across 13 auctions the median was $2.27, across 110 fixed-price sales $2.96. Fixed price therefore fetched about 31 % more — for this card patience with a set price is the better route.
What will I get for Professor's Research Crown Zenith 150/159 if I want to sell quickly?
Half of all sales fell between $2.35 and $4.55, with a median of $2.95. 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 Crown Zenith 150/159 unrealistic?
The cheapest genuine sales were around $1.95. Offers well below $1.17 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.
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