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CK-12 FlexBook 2.0 pricing

As ck12.org lists them, read 7 Oct 2026. The maker's own page has the final word.

PlanBilled and limitsPrice
FlexBook 2.0Free online customizable digital textbook; content varies by subject and bookFree
CK-12 FlexBook 2.0No charge · Free access for students, teachers, schools and districts · online FlexBooks, interactive lessons, practice and teacher toolsFree

From help.ck12.org, info.ck12.org.

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