Professor's Research
| ebay.it | n=7 | £3.11 | +20% |
| ebay.com | n=177 | £2.90 | +12% |
| ebay.co.uk | n=12 | £2.86 | +10% |
| ebay.es | n=5 | £2.63 | +1% |
| ebay.fr | n=5 | £2.62 | +1% |
| ebay.de | n=31 | £2.60 | — |
How is this value calculated?
| Evidence path | Sales | Age | Value vᵢ | Weight gᵢ |
|---|---|---|---|---|
| eigene rohe NM-Verkäufe | 126 | 13 d | £1.72 | 1028.57 |
| eigene LP-Verkäufe ÷ 0.8742 | 13 | 13 d | £1.03 | 4.03 |
| eigene PSA9-Verkäufe ÷ 3.313 | 4 | 42 d | £3.86 | 1.03 |
| eigene PSA10-Verkäufe ÷ 20.2814 | 4 | 3 mo | £2.68 | 0.26 |
Measured error for this era×language (backtest): ±17 %
| Evidence path | Sales | Age | Value vᵢ | Weight gᵢ |
|---|---|---|---|---|
| eigene rohe NM-Verkäufe | 2 | 13 d | £3.26 | 16.33 |
| en roh NM × 1.0999 (Sprach-Faktor aus 152 Karten) | 126 | 13 d | £1.89 | 1.19 |
Measured error for this era×language (backtest): ±22 %
| Evidence path | Sales | Age | Value vᵢ | Weight gᵢ |
|---|---|---|---|---|
| en roh NM × 1.1187 (Sprach-Faktor aus 76 Karten) | 126 | 13 d | £1.93 | 3.27 |
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 × 1.1593 (Sprach-Faktor aus 151 Karten) | 126 | 13 d | £1.99 | 4.02 |
Measured error for this era×language (backtest): ±18 %
No PSA numbers for this print yet — in any language.
#SWSH033
#SWSH045
#SWSH228
#SWSH001
#SWSH266
#SWSH205
#SWSH097
#SWSH194
#SWSH227
#SWSH218
#SWSH187
#SWSH026
#SWSH195
#SWSH200
#084 · SEC
#078 · UR
#240 · UR
#150 · UR
#147 · RH
#222
#223
#221
#SWSH178
#241 · UR
#085 · U
#125 · C
#189 · R
#155 · C
#123 · C
#087 · HR
#122 · C
#124 · C
#088 · HR
#190 · R
Frequently asked questions
Auction or Buy It Now — which gets more for Professor's Research SWSH Black Star Promos SWSH152/307?
Across 27 auctions the median was £2.31, across 91 fixed-price sales £2.92. Fixed price therefore fetched about 26 % more — for this card patience with a set price is the better route.
What will I get for Professor's Research SWSH Black Star Promos SWSH152/307 if I want to sell quickly?
Half of all sales fell between £2.31 and £3.37, with a median of £2.89. 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 SWSH Black Star Promos SWSH152/307 unrealistic?
The cheapest genuine sales were around £1.83. Offers well below £1.10 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.