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Grade Matrix

Graded
PSA 6
-
Grade 7 guide
$24
Grade 8 guide
$30
PSA 9
$35
PSA 10
$358

PSA 10: PriceCharting · last PSA 10 sale $357.51 on Sep 2, 2026 · checked Oct 25, 2026

PSA 9: Median of 1 PSA 9 sale in the last 90 days, latest 2026-08-17. Grade 9 guide (all graders): $40.

Grade 7 and Grade 8 are PriceCharting guides across all graders (PSA, CGC, BGS, SGC, TAG).

CGC
CGC 8
$30
CGC 9
-
CGC 10
$186
CGC P10
-

Availability

Availabilityi
5/10G: —
Graded: insufficient data · Sales per year: ~42 sales/yr · Recent sales: 1 PSA 10 comp · Raw recent sales: 30 · Grade 9 recent sales: 5 · PSA 10 recent sales: 4 · Graded copies: 82

TCGplayer Price History

No TCGplayer product is mapped for this card yet.

Card Value FAQ

How much is Blastoise GX (Promo #SM189) worth?

GemDelta shows Blastoise GX (Promo #SM189) at $9.27 market price (PriceCharting raw (eBay sold fallback)). Its Delta multiple is 38.6x.

How much is a PSA 10 Blastoise GX (Promo #SM189) worth?

A PSA 10 Blastoise GX (Promo #SM189) is currently shown at $358. GemDelta labels this as a PriceCharting guide fallback rather than verified recent sales.

Is Blastoise GX (Promo #SM189) worth grading?

GemDelta records a 29.3% gem rate for Blastoise GX (Promo #SM189), with 24 PSA 10 copies out of 82 total PSA grades and a 38.6x Delta. That describes the grading profile; it is not financial advice.

PSA 10 Recent sales

DateListingSale
Sep 2, 2026Blastoise GX SM189 Black Star Promo Jumbo Oversized Holo PSA 10 2019 EN #SM189$357.51