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Selling books altogether: #3, 4, 6, 7, 8, 10, 12, 14.

Save on Dork Diaries books with a Mercari discount code

Checkmate is a savings app with over one million users that have saved $$$ on brands like Mercari.

The Checkmate extension automatically applies Mercari discount codes, Mercari coupons and more to give you discounts on products like Dork Diaries books.