| ebay.es | n=4 | £47.89 | +120% |
| ebay.it | n=2 | £42.70 | +97% |
| ebay.co.uk | n=18 | £41.19 | +90% |
| ebay.de | n=13 | £33.95 | +56% |
| ebay.com | n=115 | £29.69 | +37% |
| ebay.fr | n=3 | £21.72 | — |
How is this value calculated?
| Evidence path | Sales | Age | Value vᵢ | Weight gᵢ |
|---|---|---|---|---|
| eigene rohe NM-Verkäufe | 10 | 40 d | £46.50 | 81.63 |
| eigene LP-Verkäufe ÷ 0.7356 | 28 | 30 d | £55.67 | 2.8 |
| eigene PSA7-Verkäufe ÷ 1.5935 | 5 | 2 mo | £67.82 | 1.71 |
| eigene PSA8-Verkäufe ÷ 2.8216 | 5 | 51 d | £51.78 | 0.93 |
| eigene PSA10-Verkäufe ÷ 80.9401 | 2 | 38 d | £81.65 | 0.18 |
| de roh NM × 1.1918 (Sprach-Faktor aus 19 Karten) | 5 | 4 d | £51.66 | 1.0 |
Measured error for this era×language (backtest): ±19 %
| Evidence path | Sales | Age | Value vᵢ | Weight gᵢ |
|---|---|---|---|---|
| eigene rohe NM-Verkäufe | 5 | 4 d | £43.34 | 40.82 |
| en roh NM × 0.8391 (Sprach-Faktor aus 19 Karten) | 10 | 40 d | £39.02 | 1.39 |
Measured error for this era×language (backtest): ±43 %
Gate not green — shown only here, never as the price.
| Evidence path | Sales | Age | Value vᵢ | Weight gᵢ |
|---|---|---|---|---|
| en roh NM × 0.5269 (Sprach-Faktor aus 18 Karten) | 10 | 40 d | £24.50 | 0.31 |
| de roh NM × 0.2658 (Sprach-Faktor aus 7 Karten) | 5 | 4 d | £11.52 | 0.07 |
Measured error for this era×language (backtest): ±12 %
Gate not green — shown only here, never as the price.
| Evidence path | Sales | Age | Value vᵢ | Weight gᵢ |
|---|---|---|---|---|
| en roh NM × 1.0872 (Sprach-Faktor aus 35 Karten) | 10 | 40 d | £50.55 | 12.2 |
| de roh NM × 0.7849 (Sprach-Faktor aus 13 Karten) | 5 | 4 d | £34.02 | 2.22 |
Measured error for this era×language (backtest): ±14 %
Gate not green — shown only here, never as the price.
No PSA numbers for this print yet — in any language.
#102 · 
#H10 · 
#65 · 
#6
#109 · 
#123 · 
#13 · Frequently asked questions
Auction or Buy It Now — which gets more for Gyarados XY Black Star Promos XY109/211?
Across 8 auctions the median was £46.71, across 45 fixed-price sales £40.02. Auctions therefore fetched about 17 % more — worth it mainly for sought-after cards with several bidders.
What will I get for Gyarados XY Black Star Promos XY109/211 if I want to sell quickly?
Half of all sales fell between £23.15 and £41.07, with a median of £32.58. 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 Gyarados XY Black Star Promos XY109/211 unrealistic?
The cheapest genuine sales were around £16.13. Offers well below £9.68 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.