| ebay.co.uk | n=2 | $174.54 | +790% |
| ebay.it | n=2 | $27.72 | +41% |
| ebay.de | n=9 | $23.14 | +18% |
| ebay.com | n=11 | $19.62 | — |
How is this value calculated?
Recency-weighted trimmed median of 7 NM sales (RAW; outliers trimmed against the median, newer sales weigh more, dynamic half-life).
| Evidence path | Sales | Age | Value vᵢ | Weight gᵢ |
|---|---|---|---|---|
| eigene rohe NM-Verkäufe | 7 | 2 mo | $19.78 | 57.14 |
| eigene LP-Verkäufe ÷ 0.7386 | 7 | 38 d | $31.41 | 2.6 |
Measured error for this era×language (backtest): ±19 %
| Evidence path | Sales | Age | Value vᵢ | Weight gᵢ |
|---|---|---|---|---|
| en roh NM × 0.8391 (Sprach-Faktor aus 19 Karten) | 7 | 2 mo | $16.59 | 1.27 |
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 × 0.5255 (Sprach-Faktor aus 18 Karten) | 7 | 2 mo | $10.39 | 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) | 7 | 2 mo | $21.50 | 11.47 |
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.
Frequently asked questions
What will I get for Gym Badge XY Black Star Promos XY203/211 if I want to sell quickly?
Half of all sales fell between $17.68 and $29.31, with a median of $20.92. 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 Gym Badge XY Black Star Promos XY203/211 unrealistic?
The cheapest genuine sales were around $11.18. Offers well below $6.71 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.