| ebay.de | n=5 | $73.42 | +291% |
| ebay.co.uk | n=9 | $31.25 | +66% |
| ebay.com | n=182 | $23.48 | +25% |
| ebay.es | n=6 | $18.77 | — |
How is this value calculated?
| Evidence path | Sales | Age | Value vᵢ | Weight gᵢ |
|---|---|---|---|---|
| eigene rohe NM-Verkäufe | 14 | 11 d | $45.36 | 114.29 |
| eigene PSA7-Verkäufe ÷ 1.5765 | 2 | 46 d | $74.63 | 2.46 |
| eigene LP-Verkäufe ÷ 0.7197 | 24 | 16 d | $41.68 | 2.23 |
| eigene PSA8-Verkäufe ÷ 2.7468 | 3 | 51 d | $103.45 | 0.87 |
Measured error for this era×language (backtest): ±19 %
| Evidence path | Sales | Age | Value vᵢ | Weight gᵢ |
|---|---|---|---|---|
| en roh NM × 0.9509 (Sprach-Faktor aus 21 Karten) | 14 | 11 d | $43.14 | 1.29 |
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 × 0.4836 (Sprach-Faktor aus 18 Karten) | 14 | 11 d | $21.93 | 1.98 |
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 | 11 d | $49.31 | 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 $16.90, across 78 fixed-price sales $29.05. 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 $17.74 and $33.69, with a median of $23.59. 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 $13.04. Offers well below $7.83 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.