| ebay.co.uk | n=7 | £2.93 | +104% |
| ebay.es | n=3 | £2.50 | +73% |
| ebay.it | n=6 | £1.87 | +30% |
| ebay.com | n=30 | £1.44 | — |
How is this value calculated?
| Evidence path | Sales | Age | Value vᵢ | Weight gᵢ |
|---|---|---|---|---|
| eigene rohe NM-Verkäufe | 25 | 2 mo | £1.80 | 204.08 |
| eigene LP-Verkäufe ÷ 0.8859 | 5 | 3 mo | £1.21 | 5.54 |
Measured error for this era×language (backtest): ±17 %
| Evidence path | Sales | Age | Value vᵢ | Weight gᵢ |
|---|---|---|---|---|
| en roh NM × 1.1114 (Sprach-Faktor aus 135 Karten) | 25 | 2 mo | £2.00 | 1.31 |
Measured error for this era×language (backtest): ±22 %
| Evidence path | Sales | Age | Value vᵢ | Weight gᵢ |
|---|---|---|---|---|
| en roh NM × 1.033 (Sprach-Faktor aus 50 Karten) | 25 | 2 mo | £1.86 | 0.69 |
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 × 1.1074 (Sprach-Faktor aus 148 Karten) | 25 | 2 mo | £1.99 | 3.89 |
Measured error for this era×language (backtest): ±18 %
No PSA numbers for this print yet — in any language.
#110 · UR
#084 · SEC
#201 · UR
#209 · SEC
#SWSH152
#240 · UR
#62 · RH
#98 · U
#150 · UR
#078 · UR
#24 · UR
#80 · U
#125 · U
#94 · UFrequently asked questions
What will I get for Professor's Research SWSH Black Star Promos SWSH178/307 if I want to sell quickly?
Half of all sales fell between £1.31 and £2.45, with a median of £1.72. 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 SWSH178/307 unrealistic?
The cheapest genuine sales were around £0.74. Offers well below £0.44 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.