Nick Norelli pointed out that Early Church Fathers: Nicene and Post-Nicene Fathers Series II (14 Vols.), is on sale at CBD for US$69.99 (after international shipping and postage: US$144.45). Now you could see why temptation could take literally any form — it includes books of church history.
(You could see the table of contents here. Eusebius, Athanasius, Gregory of Nyssa, Jerome, Cyril of Jerusalem, Gregory Nazianzen, Basil the Great, Hilary of Poiters, John of Damascus, Ambrose, John Cassian, Leo the Great, Gregory the Great, Ephraim the Syrian, and documents from the Seven Ecumenical Councils and numerous other local councils! Yummy!)