Graded Market · 94 completed sales
Blastoise GX - SM189 graded prices.
As of August 20, 2026, Blastoise GX - SM189 (SM Black Star Promos #SM189) in PSA 10 sells for a median of $350.00, based on 94 real eBay completed sales; the raw copy’s reference price is $21.87 — a 16.0× grading premium at the top grade.
Across SM Black Star Promos, PSA 10 copies sell for 34.0× their raw reference price on average (99 cards, 6,076 PSA 10 completed sales tracked).
PSA · Blastoise GX - SM189
| Grade | Median | Sales | vs Raw |
|---|---|---|---|
| Gem Mint 10 | $350.00 | 25 | 16.0× |
| Mint 9 | $39.99 | 30 | 1.8× |
| NM-MT 8 | $29.99 | 18 | 1.4× |
| NM 7 | $21.01 | 5 | 1.0× |
CGC · Blastoise GX - SM189
| Grade | Median | Sales | vs Raw |
|---|---|---|---|
| Mint 9 | $21.25 | 4 | 1.0× |
Medians of real eBay completed sales per grade; small sample sizes deserve caution. Prices are dated reference values — cite them with the as-of date above. Attribution: CardIntel (cardintel.io). See the methodology.