Sales of the hotly anticipated Onyx Storm did not disappoint. The third volume in Rebeccas Yarros’s Empyrean series had a first printing of two million copies for its $32.99 deluxe edition, and the book sold nearly 1.1 million copies in its first week on sale at outlets that report to Circana BookScan. The standard $29.99 edition sold almost 179,000 copies, putting total first week sales at BookScan outlets at about 1.3 million copies.

The brisk sales of Onyx Storm also lifted interest in Yarros’s Fourth Wing and Iron Flame books, which combined to sell roughly 88,000 copies last week. The Empyrean editions took four of the first five spots on the BookScan bestseller list last week, alongside The Let Them Theory by Mel Robbins, which sold nearly 95,000 copies. Prior to the release of Onyx Storm, publisher Entangled Publishing reported selling nearly 6.5 million copies in the Empyrean series.

The blowout sales for Onyx Storm marked the second time in roughly two months that sales of a new book took off exponentially coming out of the gate. In late November, Taylor Swift’s The Eras Tour Book sold just over 814,000 copies in its first week. The release came with a few caveats, however: it was self-published by Swift and sold exclusively at Target, leaving the traditional players in the publishing pipeline emptyhanded.

The publication of Onyx Storm had a much different reception, with bookstores across the country looking forward to its release—none more so than Barnes & Noble, which held parties in most of its outlets across the country, including the launch party at its West Coast flagship in Los Angeles. The bookseller sold more than 200,000 copies of the combined print editions in its first week on sale.