Holt mathematics textbooks for the seventh grade are available for individual purchase from third-party vendors such as Amazon.com. For brand new textbooks, the Houghton Mifflin Harcourt website offers a variety of seventh-grade mathematics textbooks.
As of 2015, Amazon.com sells a variety of Holt mathematics textbooks for seventh-grade editions at a variety of prices. These prices range approximately from $10 to $16, with older editions costing less.
At the Houghton Mifflin Harcourt website, the prices of textbooks are higher, ranging from approximately $28 for a plain textbook to $186 for a teacher's edition with transparencies and answers. These books are brand new and are the most current edition.