Graded Market · 8 completed sales
Boost Shake (Secret) graded prices.
As of August 21, 2026, Boost Shake (Secret) (Evolving Skies #229) in PSA 10 sells for a median of $35.01, based on 8 real eBay completed sales; the raw copy’s reference price is $2.41 — a 14.5× grading premium at the top grade.
Across Evolving Skies, PSA 10 copies sell for 16.8× their raw reference price on average (98 cards, 8,818 PSA 10 completed sales tracked).
PSA · Boost Shake (Secret)
| Grade | Median | Sales | vs Raw |
|---|---|---|---|
| Gem Mint 10 | $35.01 | 4 | 14.5× |
| Mint 9 | $4.88 | 3 | 2.0× |
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.