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Professor's Research · Professor Program
SVP Black Star Promos

Professor's Research · Professor Program

SVP Black Star Promos · 221/225
Illustration: Hideki Ishikawa → All Professor Program cards →
Market value · English · Near Mint
$31.22

What is Professor's Research · Professor Program 221/225 (SVP Black Star Promos) worth?

As of 2026-10-22: In Near Mint, an English copy of Professor's Research · Professor Program 221/225 is worth about $31.22, based on 1 real sales.

  1. 1
    Real sales

    1 completed Near Mint sales from eBay, Goldin and Fanatics, each one checked on the listing page.

  2. 2
    Outliers out

    Prices far above or below the median are dropped: lots, fakes, mismatched cards.

  3. 3
    Recent counts more

    Newer sales weigh more than old ones, so the value follows the market, not the yearly average.

No estimate, no asking prices. Paid sales only.
Origin: Cosmos Holo "Professor Program" Stamped Professor Program Promos 2026 / Trainer's Toolkit 2025 · Product insert
Unlimited · 2023 SVP Black Star Promos · 221 $1.69
Market price
$31.22
based on 1 sales
Price history · RAW
2026-06-14 · $29.96 $44.76 · 2026-10-18
How is this value calculated?
Ladder estimate · English · ~$1.69 gruen
Evidence pathSalesAgeValue vᵢWeight gᵢ
eigene rohe NM-Verkäufe6 19 d $1.6948.98
value = exp( Σ gᵢ·ln vᵢ ⁄ Σ gᵢ ) = $1.69 · Σ g = 48.98

Measured error for this era×language (backtest): ±16 %

Ladder estimate · Deutsch · ~$1.41 gruen
Evidence pathSalesAgeValue vᵢWeight gᵢ
en roh NM × 0.8339 (Sprach-Faktor aus 136 Karten)6 19 d $1.411.79
value = exp( Σ gᵢ·ln vᵢ ⁄ Σ gᵢ ) = $1.41 · Σ g = 1.79

Measured error for this era×language (backtest): ±19 %

Ladder estimate · Français · ~$2.08 gelb
Evidence pathSalesAgeValue vᵢWeight gᵢ
en roh NM × 1.229 (Sprach-Faktor aus 59 Karten)6 19 d $2.081.23
value = exp( Σ gᵢ·ln vᵢ ⁄ Σ gᵢ ) = $2.08 · Σ g = 1.23

Measured error for this era×language (backtest): ±25 %

Gate not green — shown only here, never as the price.

Ladder estimate · Italiano · ~$1.93 gruen
Evidence pathSalesAgeValue vᵢWeight gᵢ
en roh NM × 1.1367 (Sprach-Faktor aus 47 Karten)6 19 d $1.934.24
value = exp( Σ gᵢ·ln vᵢ ⁄ Σ gᵢ ) = $1.93 · Σ g = 4.24

Measured error for this era×language (backtest): ±17 %

PSA Population

No PSA numbers for this print yet — in any language.

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FAQ

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.