Unit sales of print books dipped 1.7% in the week ended July 31, 2021, compared to the week ended Aug. 1, 2020, at outlets that report to NPD BookScan. Once again, adult fiction and YA fiction were the only categories to post increases over last year. All three nonfiction categories had declines in the week, and juvenile fiction sales were flat. Adult nonfiction sales fell 8.8% compared to a year ago. Mark Levin’s American Marxism remained #1 on the category list, selling about 92,000 copies. Another conservative author, Ben Shapiro, was second with The Authoritarian Moment, which sold more than 37,000 copies in its first week. Last year at the time, Mary Trump’s Too Much and Never Enough was #1, selling just under 155,000 copies, and she was joined by a host of social justice and political books that had solid sales. Adult fiction sales rose 18.6% over last year without the benefit of a major hit. Colleen Hoover’s 2016 title, It Ends with Us, edged out People We Meet on Vacation by Emily Henry for the top spot on the category list by six copies, selling 19,202 units at outlets that report to BookScan. YA fiction sales increased 33%, as Adam Silvera’s They Both Die at the End stayed #1, selling more than 15,000 copies, while a new release, Gods & Monsters by Shelby Mahurin, was second, selling more than 11,000 copies. Inheritance Games by Jennifer Lynn Barnes sold more than 8,000 copies in its first week, putting it sixth on the list. Juvenile nonfiction sales dropped 19.3% in the week, as all but one subcategory had declines.