| ebay.de | n=5 | £55.52 | +291% |
| ebay.co.uk | n=9 | £23.63 | +66% |
| ebay.com | n=182 | £17.75 | +25% |
| ebay.es | n=6 | £14.20 | — |
How is this value calculated?
| Evidence path | Sales | Age | Value vᵢ | Weight gᵢ |
|---|---|---|---|---|
| eigene rohe NM-Verkäufe | 14 | 14 d | £34.30 | 114.29 |
| eigene LP-Verkäufe ÷ 0.7329 | 24 | 19 d | £30.95 | 2.59 |
| eigene PSA7-Verkäufe ÷ 1.5858 | 2 | 49 d | £56.11 | 1.36 |
| eigene PSA8-Verkäufe ÷ 3.0822 | 3 | 54 d | £69.71 | 0.94 |
Measured error for this era×language (backtest): ±19 %
| Evidence path | Sales | Age | Value vᵢ | Weight gᵢ |
|---|---|---|---|---|
| en roh NM × 0.9285 (Sprach-Faktor aus 19 Karten) | 14 | 14 d | £31.85 | 1.55 |
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 × 0.4831 (Sprach-Faktor aus 18 Karten) | 14 | 14 d | £16.57 | 0.25 |
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) | 14 | 14 d | £37.29 | 12.75 |
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.
#XY38
#95 · HR
#98 · HR
#13 · HR
#11 · HR
#36 · R
#9 · RH
#12 · RH
#5 · R
#27 · HR
#XY55
#23 · R
#35 · R
#35 · RFrequently asked questions
Auction or Buy It Now — which gets more for M Swampert EX XY Black Star Promos XY87/211?
Across 22 auctions the median was £12.78, across 78 fixed-price sales £21.97. Fixed price therefore fetched about 72 % more — for this card patience with a set price is the better route.
What will I get for M Swampert EX XY Black Star Promos XY87/211 if I want to sell quickly?
Half of all sales fell between £13.41 and £25.47, with a median of £17.84. 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 M Swampert EX XY Black Star Promos XY87/211 unrealistic?
The cheapest genuine sales were around £9.86. Offers well below £5.92 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.