Graded Market · 9 completed sales
Boost Shake (Secret) graded prices.
As of July 8, 2026, Boost Shake (Secret) (Evolving Skies #229) in PSA 10 sells for a median of $40.00, based on 9 real eBay completed sales; the raw copy’s reference price is $2.85 — a 14.0× grading premium at the top grade.
PSA · Boost Shake (Secret)
| Grade | Median | Sales | vs Raw |
|---|---|---|---|
| Gem Mint 10 | $40.00 | 5 | 14.0× |
| Mint 9 | $4.88 | 3 | 1.7× |
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.