You’re paying for 3/4 of a book.
This book explores old albeit dusted off and refreshed tropes in a unique and compelling way.
It sets up the characters, plot, and setting beautifully in the first half, loses itself in the 3rd quarter, then proceeds to rush through its last quarter that doesn't even give you an ending or closure.
Driving this point home: this book will make you fall in love with it, then it thoroughly break your trust by rushing through the books last quarter, and delivering one of the most dissatisfying, abrupt endings i’ve ever read.