The boxed sets I mentioned are listed down below.
Leigh Bardugo: "Shadow and Bone" trilogy and "Six of Crows" duology.
Jenny Han: "The Summer I Turned Pretty" trilogy.
Ransom Riggs: "Miss Peregrine's Home for Peculiar Children" ("Miss Peregrine's Home for Peculiar Children," "Hollow City," and "Library of Souls.")
Holly Black: "The Folf of the Air" ("The Cruel Prince," "The Wicked King," "The Queen of Nothing.")
Veronica Roth: "Carve the Mark" duology.
Suzanne Collins: "The Hunger Games" trilogy.
JK Rowling: "Harry Potter" series.
Tahereh Mafi: "Shatter Me" series.
