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Grookey (Cosmos Holo) price and historyThe live card page: price, chart and graded ladder.All Blister Exclusives pricesEvery card in the set, priced off the same tape.Blister Exclusives set reportHow the whole set has moved and what leads it.This week's biggest moversThe widest recorded moves across the catalog.All market reportsEvery card and set we publish a dossier on.How our calls scoredThe public ledger of every call, win or lose.Every Pokémon setThe full set index, oldest to newest.

Grookey (Cosmos Holo) Blister Exclusives Market Report

What stands out

PSA population larger than 95% of its price band ($0.25 to $0.50).

Reference class: its price band ($0.25 to $0.50). Percentiles are recomputed nightly, by disclosed rule, from recorded data across every tracked card.

01The verdict block1 readings

What the fixed formulas say about the figures below, with the arithmetic shown.

Assay

Context1

Each stamp is one fixed formula applied identically to every card. Supportive and caution mark a reading that cuts the same way for anyone holding the card. Context marks a fact that is good news to a buyer and bad news to a holder, so the desk does not pick a side.

Printing rankContext

CHEAPEST PRINTING

This printing's raw price against every tracked printing of the Pokémon.

Every verdict is a disclosed formula over recorded data, applied with the same fixed thresholds to every card. No discretionary price forecasting is used, and the arithmetic is printed so it can be reproduced.

moonstone Pro

The full Grookey (Cosmos Holo) dossier is sealed

Pro breaks the seal on our call: a stamped buy, hold, or sell and a 180-day target price on every rated card, each a disclosed formula over recorded data. Below is every section this dossier is holding back.

What this dossier is holding2 sealed sections

02
The call
The rating was refused on this card 2026-10-11 and the refusal states its reason; members read why in full.
03
Market sentiment
This card reads as a promo finish; the desk ranks that class and the species against every other.

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1631 report editions stamped and 3418 dated calls on the clock, each with a falsifier written at stamp time and never edited. Counted 2026-10-11.