| ebay.com | n=3 | £22.31 | +9% |
| ebay.de | n=9 | £20.48 | — |
How is this value calculated?
| Evidence path | Sales | Age | Value vᵢ | Weight gᵢ |
|---|---|---|---|---|
| eigene LP-Verkäufe ÷ 0.7204 | 6 | 23 d | £40.51 | 2.17 |
Measured error for this era×language (backtest): ±19 %
| Evidence path | Sales | Age | Value vᵢ | Weight gᵢ |
|---|---|---|---|---|
| en LP ÷ 0.7204 × 0.9509 | 6 | 23 d | £38.52 | 0.81 |
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 LP ÷ 0.7204 × 0.4836 | 6 | 23 d | £19.59 | 1.04 |
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 LP ÷ 0.7204 × 1.0872 | 6 | 23 d | £44.04 | 1.88 |
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.
#XY204 · C
#XY208 · C
#XY206 · C
#XY203 · C
#XY209 · C
#XY205 · C
#XY207 · C
#104 · U
#074 · U
#159 · U
#155 · U
#151 · U
#147 · U
#XY91Frequently asked questions
What will I get for Gym Badge XY Black Star Promos XY210/211 if I want to sell quickly?
Half of all sales fell between £17.61 and £26.43, with a median of £20.48. 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 XY210/211 unrealistic?
The cheapest genuine sales were around £4.52. Offers well below £2.71 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.