The 5 Most Valuable Boston Flex Cards
The most valuable Boston Flex card is the 2022 Topps Chrome Update Sapphire Boston Flex Red #US11 at $82.50 as of October 19, 2026.
By Ripbin Research · Updated 2026-10-19 · prices from live market data
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Affiliate — we may earn a commissionThe 5 most valuable Boston Flex cards in the Ripbin catalog (2023) carry a combined raw market value of $128.61, topped by a $82.50 card.
Sets in this guide
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