I’m one of the editors of a series published by Baylor University Press: Library of Early Christology. The series largely consists of reprints of important publications of the distant or recent past. See the publisher’s online list of volumes in the series here.
The volumes include some from the older so-called religionsgeschichtliche Schule (history of religion school) of the early 20th century, which were landmarks of their day, but some of their claims now dubious (e.g., Reitzenstein, Bousset). There are also a number of more recent studies that reflect what some have referred to as “the new religionsgeschichtliche Schule, which often were initially published in more expensive monograph series, and now much more affordably priced by BUP in this series.
Students and newer scholars seeking to acquire these important volumes for easy reference should check out this series.