| ebay.es | n=8 | £5.39 | +44% |
| ebay.co.uk | n=24 | £5.27 | +40% |
| ebay.de | n=29 | £3.78 | +1% |
| ebay.com | n=126 | £3.75 | — |
How is this value calculated?
| Evidence path | Sales | Age | Value vᵢ | Weight gᵢ |
|---|---|---|---|---|
| eigene rohe NM-Verkäufe | 25 | 39 d | £5.85 | 204.08 |
| eigene LP-Verkäufe ÷ 0.7115 | 37 | 50 d | £8.27 | 2.32 |
| eigene PSA9-Verkäufe ÷ 7.8733 | 2 | 38 d | £15.56 | 1.07 |
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) | 25 | 39 d | £5.57 | 0.82 |
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 × 0.5718 (Sprach-Faktor aus 16 Karten) | 25 | 39 d | £3.35 | 0.28 |
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) | 25 | 39 d | £6.36 | 13.41 |
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
#XY87
#11 · HR
#36 · R
#9 · RH
#12 · RH
#5 · R
#27 · HR
#23 · R
#35 · R
#35 · RFrequently asked questions
Is it worth grading Swampert EX XY Black Star Promos XY55/211?
A PSA 10 currently sells for about £510.20, raw the card sits at £5.85 — 87,2× as much. Mathematically, submitting returns £510.20 on average, before fees and shipping. Rule of thumb: submit when the value at a realistic grade is at least double the raw value — which is the case here. Centering decides it: an off-centre card will not get a 10.
What will I get for Swampert EX XY Black Star Promos XY55/211 if I want to sell quickly?
Half of all sales fell between £2.98 and £5.88, with a median of £3.98. 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 Swampert EX XY Black Star Promos XY55/211 unrealistic?
The cheapest genuine sales were around £1.78. Offers well below £1.07 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.