What stands out

Raw price lower than 85% of 151.

Reference class: its set (151). 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.

Registry inflowContext

EFFECTIVELY CLOSED

New slabs a week against the recorded PSA population.

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 Big Air Balloon 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 holding4 sealed sections

02
The call
The rating was refused on this card 2026-09-27 and the refusal states its reason; members read why in full.
03
The registry
3 daily PSA population snapshots on file, 14 days of continuous history, drawn as a growth curve.
04
Market sentiment
This card reads as a non-holo finish; the desk ranks that class and the species against every other.
05
The comparables
5 comparable cards across 2 reference sets, every row linked to its own dossier.

See a full report, freeMew exPaldean Fates · open to everyone, nothing sealed

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1250 report editions stamped and 2590 dated calls on the clock, each with a falsifier written at stamp time and never edited. Counted 2026-09-28. How our calls scored

Explore

Big Air Balloon price and historyThe live card page: price, chart and graded ladder.All 151 pricesEvery card in the set, priced off the same tape.151 set reportHow the whole set has moved and what leads it.Cards illustrated by Toyste BeachEverything this illustrator has drawn, with prices.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.

Other Big Air Balloon printings

Big Air Balloon 087/93 · Paldean Wonders

Research citing this card

Japanese 151 vs English 151: Prices ComparedQuant research · 9 min read