Professor Elm’s Training Method · League Promo
Market price
$8.96
based on 1 sales
How is this value calculated?
Ladder estimate · English
· ~$2.11
gruen
| Evidence path | Sales | Age | Value vᵢ | Weight gᵢ |
|---|---|---|---|---|
| eigene rohe NM-Verkäufe | 3 | 2 mo | $2.11 | 24.49 |
value = exp( Σ gᵢ·ln vᵢ ⁄ Σ gᵢ ) = $2.11 · Σ g = 24.49
Measured error for this era×language (backtest): ±19 %
Ladder estimate · Deutsch
· ~$0.73
rot
| Evidence path | Sales | Age | Value vᵢ | Weight gᵢ |
|---|---|---|---|---|
| en roh NM × 0.343 (Sprach-Faktor aus 17 Karten) | 3 | 2 mo | $0.73 | 0.32 |
value = exp( Σ gᵢ·ln vᵢ ⁄ Σ gᵢ ) = $0.73 · Σ g = 0.32
Measured error for this era×language (backtest): ±27 %
Gate not green — shown only here, never as the price.
PSA Population
No PSA numbers for this print yet — in any language.
Recent sales · 1
| 2026-09-28 | EN | RAW LP | POKEMON PROFESSOR ELM'S TRAINING METHOD LEAGUE PROMO 100/123 · eBay | $8.96 |
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Frequently asked questions
How does Last Sold determine the market value?
Last Sold 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.
Professor Elm’s Training Method · League Promo HeartGold SoulSilver · 100/123