About Boost Shake (Secret)
Boost Shake (Secret) from the Evolving Skies set (#229) is a Pokemon trading card released in 2021. It has a rarity of Rare Secret. Current fair market values for Boost Shake (Secret) are PSA 10: $34.32, PSA 9: $11, PSA 8: $10, Raw: $2.71. The most recent PSA 10 sale was $40 on May 12, 2026, with 4 sales tracked in the last 30 days. The most recent PSA 9 sale was $4.25 on February 22, 2026. 220 copies of Boost Shake (Secret) sold in the last 30 days across eBay, Goldin, and other marketplaces. CardIndex has tracked 7 total sales across all grades for this card. There are currently 171 active listings for Boost Shake (Secret).
