POKÉMON CARD RESEARCH

Blastoise GX - SM189 (Black Star Promos)

Jumbo Cards · PSA 10

ESTIMATED PSA 10 PRICE$309.40Last checked July 11, 2026

PSA 10$309.40

PSA 9$165.00

CARD / CHARACTERBlastoise GX

SETJumbo Cards

CARD NUMBERSM189

LANGUAGEEnglish

HOW PRICES WERE PAIREDOnly verified price types are shown. We could not safely pair another raw or graded record for this card.

THE QUICK ANSWER

What the numbers say

MORE DATA NEEDED

There is not enough dependable history yet to judge this raw card's trend.

WHY WE SAY THIS

Only one dependable price is stored so far.

MAIN RISK

A short history can make an ordinary price change look important.

HOW RELIABLE IS THIS?LIMITED

How much weight to give this reading—not the chance of making money.

WHAT TO CHECK NEXT

Wait for more dated prices, then compare the 30-day and 90-day direction.

30-DAY CHANGENot enough historyCurrent price compared with a trustworthy 30-day starting price

90-DAY CHANGENot enough historyCurrent price compared with a trustworthy 90-day starting price

CHANGE WHILE TRACKED+0.00%1 saved price checks

HOW RELIABLE IS THE HISTORY?Very limited1 days between first and latest observation

2 VERIFIED PRICE TYPES · NO PREDICTIONS

PRICE HISTORY IS STILL BUILDING

We have the latest reported price, but we need at least one earlier price before we can show whether it is rising or falling.

PRICE HISTORY IS STILL BUILDING

We have the latest reported price, but we need at least one earlier price before we can show whether it is rising or falling.

TRACKED HIGH$309.40

TRACKED LOW$309.40

BIGGEST DROPNot enough history

RISKS TO CHECK BEFORE BUYING

Only one stored price is available, so no price trend can be confirmed yet.

There is no trustworthy price close to 30 days ago, so a 30-day return is not shown.

There is no trustworthy price close to 90 days ago, so a 90-day return is not shown.

The raw-to-graded comparison is incomplete because another price record could not be matched with enough confidence.

A market price is a guide, not a guaranteed sale price. Condition, fees, and timing can change what a buyer pays.

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