Graded Market · 13 completed sales
Grumpig - 29/106 (Prerelease) graded prices.
As of August 22, 2026, Grumpig - 29/106 (Prerelease) (Nintendo Black Star Promos #29) in PSA 10 sells for a median of $257.00, based on 13 real eBay completed sales; the raw copy’s reference price is $35.24 — a 7.3× grading premium at the top grade.
Across Nintendo Black Star Promos, PSA 10 copies sell for 27.6× their raw reference price on average (37 cards, 494 PSA 10 completed sales tracked).
PSA · Grumpig - 29/106 (Prerelease)
| Grade | Median | Sales | vs Raw |
|---|---|---|---|
| Gem Mint 10 | $257.00 | 3 | 7.3× |
| Mint 9 | $41.00 | 5 | 1.2× |
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.